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Exploration geophysics

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load's frequency. A material profile, based on the SASW method, is thus obtained according to: a) constructing an experimental dispersion curve, by performing field experiments, each time using a different loading frequency, and measuring the surface wave-speed for each frequency; b) constructing a theoretical dispersion curve, by assuming a trial distribution for the material properties of a layered profile; c) varying the material properties of the layered profile, and repeating the previous step, until a match between the experimental dispersion curve, and the theoretical dispersion curve is attained. The SASW method renders a layered (one-dimensional) shear wave velocity profile for the soil.
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mineralization. These methods can map out sulphide bodies within the earth in three dimensions, and provide information to geologists to direct further exploratory drilling on known mineralization. Surface loop surveys are rarely used for regional exploration, however in some cases such surveys can be used with success (e.g.; SQUID surveys for nickel ore bodies).
560:(1853-1856). Before this, most unexploded ordnance was locally contained in smaller volumes, and was thus not a huge public issue. However, with the introduction of more widespread warfare, these quantities increased and were thus easy to lose track of and contain. According to Hooper & Hambric in their piece 288:(which are associated with shallow aquifers, which often respond to EM surveys in a conductive overburden). These are indirect inferential methods of detecting mineralization, as the commodity being sought is not directly conductive, or not sufficiently conductive to be measurable. EM surveys are also used in 323:
is another widely used technique as it provides necessary high resolution information about rock and fluid properties in a vertical section, although they are limited in areal extent. This limitation in areal extent is the reason why seismic reflection techniques are so popular; they provide a method
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systems emit sound pulses into the water which then bounce off of objects and are returned to the sonar transducer. The sonar transducer is able to determine both the range and orientation of an underwater object by measuring the amount of time between the release of the sound pulse and its returned
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Elastic waves are used to probe the site under investigation, by placing seismic vibrators on the ground surface. These waves propagate through the soil, and due to the heterogeneous geological structure of the site under investigation, multiple reflections and refractions occur. The response of the
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Exploration geophysics is also used to map the subsurface structure of a region, to elucidate the underlying structures, to recognize spatial distribution of rock units, and to detect structures such as faults, folds and intrusive rocks. This is an indirect method for assessing the likelihood of ore
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Full-waveform-inversion (FWI) methods are among the most recent techniques for geotechnical site characterization, and are still under continuous development. The method is fairly general, and is capable of imaging the arbitrarily heterogeneous compressional and shear wave velocity profiles of the
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has proven useful for delineating groundwater reservoirs, mapping faults around areas where hazardous substances are stored (e.g. nuclear power stations and nuclear waste storage facilities), and earthquake precursor monitoring in areas with major structures such as hydro-electric dams subject to
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The Spectral-Analysis-of-Surface-Waves (SASW) method is another non-invasive technique, which is widely used in practice to detect the shear wave velocity profile of the soil. The SASW method relies on the dispersive nature of Raleigh waves in layered media, i.e., the wave-velocity depends on the
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Since our global method of conflict resolution banks on warfare, we must be able to rely on specific practices to detect this unexploded ordnance, such as magnetic and electromagnetic surveys. By looking at differences in magnetic susceptibility and/or electrical conductivity in relation to the
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Seismic methods can also be used for mineral exploration, since they can provide high-resolution images of geologic structures hosting mineral deposits. It is not just surface seismic surveys which are used, but also borehole seismic methods. All in all, the usage of seismic methods for mineral
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techniques are the most widely used geophysical technique in hydrocarbon exploration. They are used to map the subsurface distribution of stratigraphy and its structure which can be used to delineate potential hydrocarbon accumulations, both stratigraphic and structural deposits or "traps".
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Regional EM surveys are conducted via airborne methods, using either fixed-wing aircraft or helicopter-borne EM rigs. Surface EM methods are based mostly on Transient EM methods using surface loops with a surface receiver, or a downhole tool lowered into a borehole which transects a body of
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systems are used to detect noises from marine objects or animals. This system does not emit sound pulses itself but instead focuses on sound detection from marine sources. This system simply 'listens' to the ocean, rather than measuring the range or orientation of an object.
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Civil engineering can also use remote sensing information for topographical mapping, planning, and environmental impact assessment. Airborne electromagnetic surveys are also used to characterize soft sediments in planning and engineering roads, dams, and other structures.
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can be used to detect grave sites. This detection is of both legal and cultural importance, providing an opportunity for affected families to pursue justice through legal punishment of those responsible and to experience closure over the loss of a loved one.
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is a non-invasive technique, and is used within civil construction and engineering for a variety of uses, including detection of utilities (buried water, gas, sewerage, electrical and telecommunication cables), mapping of soft soils, overburden for
272:(EM) surveys can be used to help detect a wide variety of mineral deposits, especially base metal sulphides via detection of conductivity anomalies which can be generated around sulphide bodies in the subsurface. EM surveys are also used in 191:
Many other techniques, or methods of integration of the above techniques, have been developed and are currently used. However these are not as common due to cost-effectiveness, wide applicability, and/or uncertainty in the results produced.
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Ground magnetometric surveys can be used for detecting buried ferrous metals, useful in surveying shipwrecks, modern battlefields strewn with metal debris, and even subtle disturbances such as large-scale ancient ruins.
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Magnetometric surveys can be useful in defining magnetic anomalies which represent ore (direct detection), or in some cases gangue minerals associated with ore deposits (indirect or inferential detection).
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Exploration geophysics can be used to directly detect the target style of mineralization by measuring its physical properties directly. For example, one may measure the density contrasts between the dense
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Malehmir, Alireza; Urosevic, Milovan; Bellefleur, Gilles; Juhlin, Christopher; Milkereit, Bernd (September 2012). "Seismic methods in mineral exploration and mine planning — Introduction".
564:, if we are unable to move away from war in the context of conflict resolution, this problem will only continue to get worse and will likely take more than a century to resolve. 3084: 299:
Electric-resistance methods such as induced polarization methods can be useful for directly detecting sulfide bodies, coal, and resistive rocks such as salt and carbonates.
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Fathi, Arash; Poursartip, Babak; Kallivokas, Loukas (2015). "Time‐domain hybrid formulations for wave simulations in three‐dimensional PML‐truncated heterogeneous media".
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are also used, with considerable frequency, in oil and gas exploration. These can be used to determine the geometry and depth of covered geological structures including
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mineralization, which often contains magnetite, can also be detected though the ore minerals themselves would be non-magnetic. Similarly, magnetite, hematite, and often
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Petrovic, A.; Khan, S.D.; Chafetz, H. (2008). "Remote detection and geochemical studies for finding hydrocarbon-induced alterations in Lisbon Valley, Utah".
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Kallivokas, L.F.; Fathi, A.; Kucukcoban, S.; Stokoe II, K.H.; Bielak, J.; Ghattas, O. (2013). "Site characterization using full waveform inversion".
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Gravity surveying can be used to detect dense bodies of rocks within host formations of less dense wall rocks. This can be used to directly detect
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Fathi, Arash; Kallivokas, Loukas; Poursartip, Babak (2015). "Full-waveform inversion in three-dimensional PML-truncated elastic media".
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Methods devised for finding mineral or hydrocarbon deposits can also be used in other areas such as monitoring environmental impact,
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unexploded ordnance and the surrounding geology (soil, rock, etc.), we are able to detect and contain unexploded ordnance.
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Specifically at sea, two methods are used: marine seismic reflection and electromagnetic seabed logging (SBL). Marine
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Khan, S.D.; Jacobson, S. (2008). "Remote Sensing and Geochemistry for Detecting Hydrocarbon Microseepages".
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Okazaki, Kenji et al. “Airborne Electromagnetic and Magnetic Surveys for Long Tunnel Construction Design.”
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ore deposits, iron ore deposits, skarn deposits, and salt diapirs which can form oil and gas traps.
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signatures compared to the surrounding rocks; the latter is particularly useful for metallic ores.
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Fathi, Arash; Poursartip, Babak; Stokoe II, Kenneth H; Kallivokas, Loukas F. (2016).
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Warning sign from The National Trust indicating the presence of unexploded ordnance
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for interpolating and extrapolating well log information over a much larger area.
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Fassbinder, Jörg W. E. “Magnetometry in Archaeology – From Theory to Practice.”
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is the standard used in the UK as a code of practice for site investigations.
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US Department of Commerce, National Oceanic and Atmospheric Administration.
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The most direct method of detection of ore via magnetism involves detecting
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Berezowski, Victoria; Mallett, Xanthé; Ellis, Justin; Moffat, Ian (2021).
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sites, ground water investigations, subsurface salinity mapping,
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The issue of unexploded ordnance originated as a result of the
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mineralization via mapping magnetic anomalies associated with
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Electromagnetic seabed logging, A new tool for geoscientists
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pipes tend to have lower resistance than enclosing rocks),
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International Journal for Numerical Methods in Engineering
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Civil Engineering Applications of Ground Penetrating Radar
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reservoirs. It can also be used to detect the presence of
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Detection and Identification of Visually Obscured Targets
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Computer Methods in Applied Mechanics and Engineering
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site to the seismic vibrator is measured by sensors (
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International Association of Oil & Gas Producers
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Pajewski. 593:Leibniz Institute for Applied Geophysics 529: 504: 3288:China National Offshore Oil Corporation 1073: 201:deposits or hydrocarbon accumulations. 3876: 3162:Unconventional (oil and gas) reservoir 2921:2020 Russia–Saudi Arabia oil price war 2375: 1158: 687:Geological Society of America Bulletin 562:Unexploded Ordnance (UXO): The Problem 222: 161:transient/time-domain electromagnetics 81: 78:and the resistive silicate host rock. 2349: 1206: 509:Geophysical survey using magnetometer 286:palaeochannel-hosted uranium deposits 3293:China National Petroleum Corporation 613:Society of Exploration Geophysicists 398: 303:exploration is steadily increasing. 260:Mississippi Valley Type ore deposits 251:are common minerals associated with 93:to locate earthquakes and assist in 445: 13: 3353:National Iranian South Oil Company 3069:Western Canadian Sedimentary Basin 420:Spectral-Analysis-of-Surface-Waves 70:host rock, or one may measure the 14: 3900: 3821:Intercontinental Exchange Futures 3710:Chicago Bridge & Iron Company 3363:Oil & Gas Development Company 1243:Offshore geotechnical engineering 458:high levels of seismic activity. 139:electrical resistivity tomography 3858: 3857: 1534: 1522: 1510: 1498: 1486: 1474: 1460: 1450: 1433: 1421: 1409: 1397: 1385: 1373: 1351: 1322: 1310: 1298: 1286: 1274: 1074:Defence, National (2017-11-10). 474:Geophysical survey (archaeology) 395:(signalled by seismic surveys). 3368:Oil and Natural Gas Corporation 1159:Butler, Dwain K. (2003-11-01). 961: 948: 744:10.1016/j.marpetgeo.2008.03.008 3836:Society of Petroleum Engineers 3607:Port Harcourt Refining Company 3273:Abu Dhabi National Oil Company 895: 852: 811: 776: 763: 750: 713: 678: 625: 467: 219:, and interplanetary imaging. 86:The main techniques used are: 1: 2782:Production sharing agreements 1893:Mechanically stabilized earth 1185:10.1016/j.jappgeo.2003.08.022 1165:Journal of Applied Geophysics 845:10.1016/j.soildyn.2016.04.010 805:10.1016/j.soildyn.2012.12.012 618: 526:Unexploded ordnance detection 3816:Canadian petroleum companies 3811:American Petroleum Institute 3348:National Iranian Oil Company 3333:Kuwait Petroleum Corporation 1645:Hydraulic conductivity tests 723:Marine and Petroleum Geology 513: 74:contrast between conductive 7: 3831:International Energy Agency 2816:Enhanced oil recovery (EOR) 2206:Stress distribution in soil 571: 10: 3905: 3418:PTT Public Company Limited 3019:East Midlands Oil Province 3004:List of natural gas fields 2604:Integrated asset modelling 1356:Pore pressure measurement 654:10.1190/2012-0724-SPSEIN.1 481:can be used to map buried 471: 131:to map magnetic anomalies. 3853: 3803: 3790:Weatherford International 3669: 3519: 3471: 3323:Iraq National Oil Company 3259: 3216: 3201: 3192: 3077: 2994: 2876: 2762: 2656: 2584: 2527: 2486: 2479: 2401: 2383: 2263: 2218: 2117: 2109:Preconsolidation pressure 2081: 2072: 2045: 1865: 1814: 1801: 1716: 1670: 1661: 1584: 1504:Standard penetration test 1262: 1249: 1240: 934:10.1016/j.cma.2015.07.008 578:Archaeological geophysics 372:techniques, specifically 181:Remote sensing techniques 1605:California bearing ratio 1403:Rotary-pressure sounding 1234:Geotechnical engineering 969:Rossiiskaia arkheologiia 958:36.16 (2011): 1237–1246. 519:Ground penetrating radar 479:Ground penetrating radar 409:Ground penetrating radar 404:Ground penetrating radar 157:ground penetrating radar 22:is an applied branch of 3841:World Petroleum Council 3715:China Oilfield Services 2772:Petroleum fiscal regime 2471:Western Canadian Select 2466:West Texas Intermediate 2025:Geosynthetic clay liner 2000:Expanded clay aggregate 1620:Proctor compaction test 1561:Crosshole sonic logging 1547:Nuclear densometer test 1304:Geo-electrical sounding 1120:10.1201/9781315141084-1 588:Kola Superdeep Borehole 583:Hydrocarbon exploration 429:Full waveform inversion 364:magnetic susceptibility 307:Hydrocarbon exploration 276:exploration (where the 253:hydrothermal alteration 195: 149:Electromagnetic methods 72:electrical conductivity 3318:Indian Oil Corporation 2804:Submersible pump (ESP) 2749:Underbalanced drilling 2570:of gasoline and diesel 2288:Earthquake engineering 2099:Lateral earth pressure 1724:Hydraulic conductivity 1575:Wave equation analysis 1554:Exploration geophysics 1446:Deformation monitoring 1415:Rotary weight sounding 535: 510: 239:which usually contain 237:banded iron formations 20:Exploration geophysics 3695:Cameron International 3137:Petrodollar recycling 3120:fossil fuel phase-out 2683:Differential sticking 2636:Reflection seismology 2609:Petroleum engineering 2451:OPEC Reference Basket 1466:Settlement recordings 1391:Rock control drilling 1292:Cone penetration test 998:oceanservice.noaa.gov 971:2019.3 (2019): 75–91. 533: 508: 374:hyperspectral imaging 185:hyperspectral imaging 135:Electrical techniques 101:Reflection seismology 3592:Occidental Petroleum 2906:1990 oil price shock 2732:Shale oil extraction 2705:Drilling engineering 2688:Directional drilling 2614:Reservoir simulation 2328:Agricultural science 2030:Cellular confinement 760:. Ed. Springer, 2017 358:due to their unique 243:in some proportion. 143:induced polarization 129:aeromagnetic surveys 3740:Naftiran Intertrade 3685:Amec Foster Wheeler 3612:Reliance Industries 3501:Naftiran Intertrade 3313:Hindustan Petroleum 2911:2000s energy crisis 2220:Numerical analysis 2104:Overburden pressure 2094:Pore water pressure 1874:Shoring structures 1749:Reynolds' dilatancy 1650:Water content tests 1635:Triaxial shear test 1595:Soil classification 1568:Pile integrity test 1177:2003JAG....54..111B 1038:2021RemS...13.2880B 926:2015CMAME.296...39F 873:2015IJNME.101..165F 836:2016SDEE...87...63F 797:2013SDEE...47...62K 736:2008MarPG..25..696P 699:2008GSAB..120...96K 646:2012Geop...77C...1M 598:Mineral exploration 539:Unexploded ordnance 290:unexploded ordnance 223:Mineral exploration 217:site investigations 171:Borehole geophysics 125:Magnetic techniques 119:gravity gradiometry 82:Geophysical methods 56:unexploded ordnance 3587:Marathon Petroleum 3009:List of oil fields 2619:Reservoir modeling 2377:Petroleum industry 2195:Slab stabilisation 2175:Stability analysis 1047:10.3390/rs13152880 756:StĂ©phane Sainson, 536: 511: 378:spectral signature 352:igneous intrusions 312:Seismic reflection 115:gravity techniques 105:seismic refraction 91:Seismic tomography 3871: 3870: 3849: 3848: 3735:Nabors Industries 3665: 3664: 2863:Well intervention 2838:Petroleum product 2737:Ljungström method 2641:Seismic inversion 2626:Petroleum geology 2580: 2579: 2343: 2342: 2214: 2213: 2190:Sliding criterion 2152:Response spectrum 2068: 2067: 1898:Pressure grouting 1797: 1796: 1657: 1656: 1610:Direct shear test 1316:Permeability test 663:20.500.11937/5522 608:Petroleum geology 399:Civil engineering 214:civil engineering 3896: 3889:Economic geology 3861: 3860: 3562:Hess Corporation 3283:Bharat Petroleum 3214: 3213: 3199: 3198: 2886:1967 Oil Embargo 2722:Lost circulation 2560:Posted oil price 2484: 2483: 2441:Isthmus-34 Light 2370: 2363: 2356: 2347: 2346: 2202:Bearing capacity 2089:Effective stress 2079: 2078: 1980:Land reclamation 1920:Land development 1815:Natural features 1812: 1811: 1779:Specific storage 1668: 1667: 1600:Atterberg limits 1538: 1526: 1514: 1502: 1490: 1478: 1464: 1454: 1439:Screw plate test 1437: 1425: 1413: 1401: 1389: 1377: 1355: 1326: 1314: 1302: 1290: 1278: 1260: 1259: 1227: 1220: 1213: 1204: 1203: 1197: 1196: 1156: 1147: 1146: 1145: 1144: 1114:, pp. 1–8, 1103: 1090: 1089: 1087: 1086: 1071: 1060: 1059: 1049: 1017: 1008: 1007: 1005: 1004: 994:"What is sonar?" 989: 972: 965: 959: 952: 946: 945: 919: 899: 893: 892: 881:10.1002/nme.4780 856: 850: 849: 847: 815: 809: 808: 780: 774: 767: 761: 754: 748: 747: 717: 711: 710: 707:10.1130/b26182.1 682: 676: 675: 665: 629: 455:Magnetotellurics 446:Other techniques 393:geological traps 385:magnetotellurics 340:subsiding basins 153:magnetotellurics 76:sulfide minerals 66:and the lighter 50:reservoirs; and 28:economic geology 3904: 3903: 3899: 3898: 3897: 3895: 3894: 3893: 3874: 3873: 3872: 3867: 3845: 3799: 3795:John Wood Group 3785:Valaris Limited 3678: 3675: 3672: 3661: 3527:APA Corporation 3515: 3467: 3266: 3263: 3255: 3210: 3207: 3204: 3194: 3188: 3089:Classification 3073: 2996: 2990: 2926:Nationalization 2896:1979 oil crisis 2891:1973 oil crisis 2872: 2858:Water injection 2826:Steam injection 2821:Gas reinjection 2789:Artificial lift 2758: 2700:Drill stem test 2652: 2576: 2523: 2475: 2397: 2379: 2374: 2344: 2339: 2318:Earth materials 2259: 2221: 2210: 2119: 2113: 2064: 2041: 1995:Earth structure 1990:Erosion control 1888:Ground freezing 1878:Retaining walls 1861: 1803: 1793: 1754:Angle of repose 1712: 1653: 1587: 1580: 1579: 1540:Visible bedrock 1492:Simple sounding 1480:Shear vane test 1256:instrumentation 1255: 1253: 1245: 1236: 1231: 1201: 1200: 1157: 1150: 1142: 1140: 1130: 1104: 1093: 1084: 1082: 1072: 1063: 1018: 1011: 1002: 1000: 990: 975: 966: 962: 953: 949: 900: 896: 857: 853: 816: 812: 781: 777: 768: 764: 755: 751: 718: 714: 693:(1–2): 96–105. 683: 679: 630: 626: 621: 574: 528: 516: 476: 470: 448: 431: 422: 406: 401: 309: 270:Electromagnetic 225: 198: 84: 17: 12: 11: 5: 3902: 3892: 3891: 3886: 3869: 3868: 3866: 3865: 3854: 3851: 3850: 3847: 3846: 3844: 3843: 3838: 3833: 3828: 3823: 3818: 3813: 3807: 3805: 3801: 3800: 3798: 3797: 3792: 3787: 3782: 3777: 3772: 3767: 3762: 3757: 3752: 3747: 3742: 3737: 3732: 3727: 3722: 3717: 3712: 3707: 3702: 3697: 3692: 3687: 3681: 3679: 3670: 3667: 3666: 3663: 3662: 3660: 3659: 3654: 3649: 3644: 3639: 3634: 3632:Surgutneftegas 3629: 3624: 3619: 3614: 3609: 3604: 3599: 3594: 3589: 3584: 3579: 3574: 3569: 3564: 3559: 3554: 3552:Eneos Holdings 3549: 3544: 3542:ConocoPhillips 3539: 3534: 3532:Cenovus Energy 3529: 3523: 3521: 3517: 3516: 3514: 3513: 3508: 3503: 3498: 3493: 3488: 3483: 3477: 3475: 3473:Energy trading 3469: 3468: 3466: 3465: 3460: 3455: 3450: 3445: 3440: 3435: 3430: 3425: 3420: 3415: 3410: 3405: 3400: 3395: 3390: 3385: 3380: 3375: 3370: 3365: 3360: 3355: 3350: 3345: 3340: 3335: 3330: 3325: 3320: 3315: 3310: 3305: 3300: 3295: 3290: 3285: 3280: 3275: 3269: 3267: 3260: 3257: 3256: 3254: 3253: 3248: 3243: 3238: 3233: 3228: 3222: 3220: 3211: 3202: 3196: 3190: 3189: 3187: 3186: 3185: 3184: 3179: 3174: 3169: 3159: 3157:Swing producer 3154: 3149: 3144: 3139: 3134: 3129: 3128: 3127: 3122: 3112: 3107: 3102: 3101: 3100: 3095: 3087: 3081: 3079: 3075: 3074: 3072: 3071: 3066: 3061: 3056: 3051: 3046: 3041: 3036: 3031: 3029:Gulf of Mexico 3026: 3021: 3016: 3011: 3006: 3000: 2998: 2992: 2991: 2989: 2988: 2983: 2978: 2973: 2968: 2963: 2958: 2953: 2948: 2943: 2938: 2933: 2928: 2923: 2918: 2916:2010s oil glut 2913: 2908: 2903: 2901:1980s oil glut 2898: 2893: 2888: 2882: 2880: 2874: 2873: 2871: 2870: 2865: 2860: 2855: 2850: 2845: 2840: 2835: 2830: 2829: 2828: 2823: 2813: 2808: 2807: 2806: 2801: 2796: 2786: 2785: 2784: 2779: 2768: 2766: 2760: 2759: 2757: 2756: 2751: 2746: 2741: 2740: 2739: 2729: 2724: 2719: 2718: 2717: 2710:Drilling fluid 2707: 2702: 2697: 2696: 2695: 2685: 2680: 2679: 2678: 2668: 2662: 2660: 2654: 2653: 2651: 2650: 2648:Seismic source 2645: 2644: 2643: 2633: 2628: 2623: 2622: 2621: 2616: 2606: 2601: 2596: 2590: 2588: 2582: 2581: 2578: 2577: 2575: 2574: 2573: 2572: 2562: 2557: 2552: 2547: 2542: 2537: 2531: 2529: 2525: 2524: 2522: 2521: 2516: 2511: 2506: 2501: 2496: 2490: 2488: 2481: 2477: 2476: 2474: 2473: 2468: 2463: 2458: 2453: 2448: 2446:Japan Cocktail 2443: 2438: 2433: 2428: 2423: 2418: 2413: 2407: 2405: 2399: 2398: 2396: 2395: 2393:Primary energy 2390: 2384: 2381: 2380: 2373: 2372: 2365: 2358: 2350: 2341: 2340: 2338: 2337: 2336: 2335: 2325: 2320: 2315: 2310: 2305: 2300: 2295: 2290: 2285: 2280: 2275: 2269: 2267: 2265:Related fields 2261: 2260: 2258: 2257: 2252: 2247: 2242: 2237: 2232: 2226: 2224: 2216: 2215: 2212: 2211: 2209: 2208: 2199: 2198: 2197: 2192: 2187: 2185:Classification 2182: 2177: 2166: 2165: 2164: 2159: 2157:Seismic hazard 2154: 2144: 2139: 2134: 2129: 2123: 2121: 2115: 2114: 2112: 2111: 2106: 2101: 2096: 2091: 2085: 2083: 2076: 2070: 2069: 2066: 2065: 2063: 2062: 2057: 2051: 2049: 2043: 2042: 2040: 2039: 2034: 2033: 2032: 2027: 2022: 2017: 2007: 2002: 1997: 1992: 1987: 1982: 1977: 1972: 1967: 1962: 1957: 1952: 1947: 1942: 1937: 1932: 1927: 1922: 1917: 1916: 1915: 1910: 1905: 1900: 1895: 1890: 1885: 1880: 1871: 1869: 1863: 1862: 1860: 1859: 1854: 1849: 1844: 1839: 1834: 1829: 1824: 1818: 1816: 1809: 1799: 1798: 1795: 1794: 1792: 1791: 1786: 1784:Shear strength 1781: 1776: 1771: 1766: 1761: 1759:Friction angle 1756: 1751: 1746: 1741: 1736: 1731: 1726: 1720: 1718: 1714: 1713: 1711: 1710: 1705: 1700: 1695: 1690: 1685: 1680: 1674: 1672: 1665: 1659: 1658: 1655: 1654: 1652: 1647: 1642: 1640:Oedometer test 1637: 1632: 1630:Sieve analysis 1627: 1622: 1617: 1612: 1607: 1602: 1597: 1592: 1590: 1582: 1581: 1578: 1577: 1571: 1570: 1564: 1563: 1557: 1556: 1550: 1549: 1543: 1542: 1531: 1530: 1519: 1518: 1516:Total sounding 1507: 1506: 1495: 1494: 1483: 1482: 1471: 1470: 1469: 1468: 1458: 1442: 1441: 1430: 1429: 1418: 1417: 1406: 1405: 1394: 1393: 1382: 1381: 1370: 1369: 1368: 1367: 1362: 1348: 1347: 1346: 1345: 1340: 1335: 1319: 1318: 1307: 1306: 1295: 1294: 1283: 1282: 1271: 1270: 1268: 1257: 1247: 1246: 1241: 1238: 1237: 1230: 1229: 1222: 1215: 1207: 1199: 1198: 1171:(1): 111–125. 1148: 1128: 1091: 1061: 1026:Remote Sensing 1009: 973: 960: 947: 894: 867:(3): 165–198. 851: 810: 775: 762: 749: 730:(8): 696–705. 712: 677: 640:(5): WC1–WC2. 623: 622: 620: 617: 616: 615: 610: 605: 600: 595: 590: 585: 580: 573: 570: 527: 524: 515: 512: 469: 466: 447: 444: 430: 427: 421: 418: 405: 402: 400: 397: 370:Remote sensing 308: 305: 224: 221: 210:archaeological 197: 194: 189: 188: 178: 173:, also called 168: 146: 132: 122: 108: 98: 83: 80: 15: 9: 6: 4: 3: 2: 3901: 3890: 3887: 3885: 3882: 3881: 3879: 3864: 3856: 3855: 3852: 3842: 3839: 3837: 3834: 3832: 3829: 3827: 3824: 3822: 3819: 3817: 3814: 3812: 3809: 3808: 3806: 3802: 3796: 3793: 3791: 3788: 3786: 3783: 3781: 3778: 3776: 3773: 3771: 3768: 3766: 3763: 3761: 3758: 3756: 3753: 3751: 3748: 3746: 3743: 3741: 3738: 3736: 3733: 3731: 3728: 3726: 3723: 3721: 3718: 3716: 3713: 3711: 3708: 3706: 3703: 3701: 3698: 3696: 3693: 3691: 3688: 3686: 3683: 3682: 3680: 3677: 3668: 3658: 3657:Valero Energy 3655: 3653: 3650: 3648: 3645: 3643: 3640: 3638: 3635: 3633: 3630: 3628: 3625: 3623: 3622:Suncor Energy 3620: 3618: 3615: 3613: 3610: 3608: 3605: 3603: 3600: 3598: 3595: 3593: 3590: 3588: 3585: 3583: 3580: 3578: 3575: 3573: 3570: 3568: 3565: 3563: 3560: 3558: 3555: 3553: 3550: 3548: 3545: 3543: 3540: 3538: 3535: 3533: 3530: 3528: 3525: 3524: 3522: 3518: 3512: 3509: 3507: 3504: 3502: 3499: 3497: 3494: 3492: 3489: 3487: 3484: 3482: 3479: 3478: 3476: 3474: 3470: 3464: 3461: 3459: 3456: 3454: 3451: 3449: 3446: 3444: 3441: 3439: 3436: 3434: 3431: 3429: 3426: 3424: 3421: 3419: 3416: 3414: 3411: 3409: 3406: 3404: 3401: 3399: 3396: 3394: 3391: 3389: 3386: 3384: 3381: 3379: 3376: 3374: 3371: 3369: 3366: 3364: 3361: 3359: 3356: 3354: 3351: 3349: 3346: 3344: 3341: 3339: 3336: 3334: 3331: 3329: 3326: 3324: 3321: 3319: 3316: 3314: 3311: 3309: 3306: 3304: 3301: 3299: 3296: 3294: 3291: 3289: 3286: 3284: 3281: 3279: 3276: 3274: 3271: 3270: 3268: 3265: 3258: 3252: 3251:TotalEnergies 3249: 3247: 3244: 3242: 3239: 3237: 3234: 3232: 3229: 3227: 3224: 3223: 3221: 3219: 3215: 3212: 3209: 3200: 3197: 3195:organisations 3193:Companies and 3191: 3183: 3180: 3178: 3175: 3173: 3170: 3168: 3165: 3164: 3163: 3160: 3158: 3155: 3153: 3150: 3148: 3145: 3143: 3140: 3138: 3135: 3133: 3132:Petrocurrency 3130: 3126: 3123: 3121: 3118: 3117: 3116: 3113: 3111: 3108: 3106: 3105:Oil shale gas 3103: 3099: 3096: 3094: 3091: 3090: 3088: 3086: 3085:Abbreviations 3083: 3082: 3080: 3076: 3070: 3067: 3065: 3062: 3060: 3057: 3055: 3052: 3050: 3047: 3045: 3044:Permian Basin 3042: 3040: 3037: 3035: 3032: 3030: 3027: 3025: 3022: 3020: 3017: 3015: 3012: 3010: 3007: 3005: 3002: 3001: 2999: 2993: 2987: 2984: 2982: 2981:United States 2979: 2977: 2974: 2972: 2969: 2967: 2964: 2962: 2959: 2957: 2954: 2952: 2949: 2947: 2944: 2942: 2941:Seven Sisters 2939: 2937: 2934: 2932: 2929: 2927: 2924: 2922: 2919: 2917: 2914: 2912: 2909: 2907: 2904: 2902: 2899: 2897: 2894: 2892: 2889: 2887: 2884: 2883: 2881: 2879: 2875: 2869: 2866: 2864: 2861: 2859: 2856: 2854: 2851: 2849: 2846: 2844: 2841: 2839: 2836: 2834: 2831: 2827: 2824: 2822: 2819: 2818: 2817: 2814: 2812: 2809: 2805: 2802: 2800: 2797: 2795: 2792: 2791: 2790: 2787: 2783: 2780: 2778: 2775: 2774: 2773: 2770: 2769: 2767: 2765: 2761: 2755: 2752: 2750: 2747: 2745: 2742: 2738: 2735: 2734: 2733: 2730: 2728: 2725: 2723: 2720: 2716: 2713: 2712: 2711: 2708: 2706: 2703: 2701: 2698: 2694: 2691: 2690: 2689: 2686: 2684: 2681: 2677: 2674: 2673: 2672: 2669: 2667: 2664: 2663: 2661: 2659: 2655: 2649: 2646: 2642: 2639: 2638: 2637: 2634: 2632: 2629: 2627: 2624: 2620: 2617: 2615: 2612: 2611: 2610: 2607: 2605: 2602: 2600: 2597: 2595: 2594:Core sampling 2592: 2591: 2589: 2587: 2583: 2571: 2568: 2567: 2566: 2563: 2561: 2558: 2556: 2553: 2551: 2548: 2546: 2543: 2541: 2538: 2536: 2533: 2532: 2530: 2526: 2520: 2517: 2515: 2512: 2510: 2507: 2505: 2502: 2500: 2497: 2495: 2492: 2491: 2489: 2485: 2482: 2478: 2472: 2469: 2467: 2464: 2462: 2459: 2457: 2454: 2452: 2449: 2447: 2444: 2442: 2439: 2437: 2434: 2432: 2431:Indian Basket 2429: 2427: 2424: 2422: 2419: 2417: 2414: 2412: 2409: 2408: 2406: 2404: 2400: 2394: 2391: 2389: 2386: 2385: 2382: 2378: 2371: 2366: 2364: 2359: 2357: 2352: 2351: 2348: 2334: 2331: 2330: 2329: 2326: 2324: 2321: 2319: 2316: 2314: 2311: 2309: 2306: 2304: 2301: 2299: 2296: 2294: 2293:Geomorphology 2291: 2289: 2286: 2284: 2281: 2279: 2276: 2274: 2271: 2270: 2268: 2266: 2262: 2256: 2253: 2251: 2248: 2246: 2243: 2241: 2238: 2236: 2233: 2231: 2228: 2227: 2225: 2223: 2217: 2207: 2203: 2200: 2196: 2193: 2191: 2188: 2186: 2183: 2181: 2178: 2176: 2173: 2172: 2170: 2167: 2163: 2160: 2158: 2155: 2153: 2150: 2149: 2148: 2145: 2143: 2140: 2138: 2137:Consolidation 2135: 2133: 2132:Frost heaving 2130: 2128: 2125: 2124: 2122: 2116: 2110: 2107: 2105: 2102: 2100: 2097: 2095: 2092: 2090: 2087: 2086: 2084: 2080: 2077: 2075: 2071: 2061: 2058: 2056: 2053: 2052: 2050: 2048: 2044: 2038: 2035: 2031: 2028: 2026: 2023: 2021: 2018: 2016: 2013: 2012: 2011: 2010:Geosynthetics 2008: 2006: 2005:Crushed stone 2003: 2001: 1998: 1996: 1993: 1991: 1988: 1986: 1983: 1981: 1978: 1976: 1973: 1971: 1968: 1966: 1963: 1961: 1960:Cut-and-cover 1958: 1956: 1953: 1951: 1948: 1946: 1943: 1941: 1938: 1936: 1933: 1931: 1928: 1926: 1923: 1921: 1918: 1914: 1911: 1909: 1906: 1904: 1901: 1899: 1896: 1894: 1891: 1889: 1886: 1884: 1881: 1879: 1876: 1875: 1873: 1872: 1870: 1868: 1864: 1858: 1855: 1853: 1850: 1848: 1845: 1843: 1840: 1838: 1835: 1833: 1830: 1828: 1825: 1823: 1820: 1819: 1817: 1813: 1810: 1807: 1800: 1790: 1787: 1785: 1782: 1780: 1777: 1775: 1772: 1770: 1767: 1765: 1762: 1760: 1757: 1755: 1752: 1750: 1747: 1745: 1742: 1740: 1737: 1735: 1732: 1730: 1729:Water content 1727: 1725: 1722: 1721: 1719: 1715: 1709: 1706: 1704: 1701: 1699: 1696: 1694: 1691: 1689: 1686: 1684: 1681: 1679: 1676: 1675: 1673: 1669: 1666: 1664: 1660: 1651: 1648: 1646: 1643: 1641: 1638: 1636: 1633: 1631: 1628: 1626: 1623: 1621: 1618: 1616: 1613: 1611: 1608: 1606: 1603: 1601: 1598: 1596: 1593: 1591: 1589: 1583: 1576: 1573: 1572: 1569: 1566: 1565: 1562: 1559: 1558: 1555: 1552: 1551: 1548: 1545: 1544: 1541: 1537: 1533: 1532: 1529: 1525: 1521: 1520: 1517: 1513: 1509: 1508: 1505: 1501: 1497: 1496: 1493: 1489: 1485: 1484: 1481: 1477: 1473: 1472: 1467: 1463: 1459: 1457: 1453: 1449: 1448: 1447: 1444: 1443: 1440: 1436: 1432: 1431: 1428: 1427:Sample series 1424: 1420: 1419: 1416: 1412: 1408: 1407: 1404: 1400: 1396: 1395: 1392: 1388: 1384: 1383: 1380: 1376: 1372: 1371: 1366: 1363: 1361: 1358: 1357: 1354: 1350: 1349: 1344: 1341: 1339: 1336: 1334: 1331: 1330: 1329: 1325: 1321: 1320: 1317: 1313: 1309: 1308: 1305: 1301: 1297: 1296: 1293: 1289: 1285: 1284: 1281: 1277: 1273: 1272: 1269: 1266: 1261: 1258: 1252: 1251:Investigation 1248: 1244: 1239: 1235: 1228: 1223: 1221: 1216: 1214: 1209: 1208: 1205: 1194: 1190: 1186: 1182: 1178: 1174: 1170: 1166: 1162: 1155: 1153: 1139: 1135: 1131: 1129:9781315141084 1125: 1121: 1117: 1113: 1109: 1102: 1100: 1098: 1096: 1081: 1080:www.canada.ca 1077: 1070: 1068: 1066: 1057: 1053: 1048: 1043: 1039: 1035: 1031: 1027: 1023: 1016: 1014: 999: 995: 988: 986: 984: 982: 980: 978: 970: 964: 957: 951: 943: 939: 935: 931: 927: 923: 918: 913: 909: 905: 898: 890: 886: 882: 878: 874: 870: 866: 862: 855: 846: 841: 837: 833: 829: 825: 821: 814: 806: 802: 798: 794: 790: 786: 779: 772: 766: 759: 753: 745: 741: 737: 733: 729: 725: 724: 716: 708: 704: 700: 696: 692: 688: 681: 673: 669: 664: 659: 655: 651: 647: 643: 639: 635: 628: 624: 614: 611: 609: 606: 604: 601: 599: 596: 594: 591: 589: 586: 584: 581: 579: 576: 575: 569: 565: 563: 559: 554: 552: 548: 544: 540: 532: 523: 520: 507: 503: 500: 499:Passive sonar 495: 490: 486: 484: 480: 475: 465: 463: 459: 456: 452: 443: 441: 435: 426: 417: 415: 410: 396: 394: 391:changes over 390: 386: 381: 379: 375: 371: 367: 365: 361: 357: 353: 349: 345: 341: 337: 333: 329: 325: 322: 317: 313: 304: 300: 297: 293: 291: 287: 284:exploration, 283: 279: 275: 271: 267: 265: 261: 256: 254: 250: 246: 242: 238: 234: 229: 220: 218: 215: 211: 207: 202: 193: 186: 182: 179: 176: 172: 169: 166: 162: 158: 154: 150: 147: 144: 140: 136: 133: 130: 126: 123: 120: 116: 112: 109: 106: 102: 99: 96: 92: 89: 88: 87: 79: 77: 73: 69: 65: 59: 57: 53: 49: 45: 41: 37: 33: 29: 25: 21: 3760:Schlumberger 3690:Baker Hughes 3582:Marathon Oil 3572:Imperial Oil 3567:Husky Energy 3557:Galp Energia 3547:Devon Energy 3433:Saudi Aramco 3413:Petrovietnam 3358:NNPC Limited 3262:National oil 3142:Petrofiction 3110:Orphan wells 3078:Other topics 3049:Persian Gulf 2976:Saudi Arabia 2946:Standard Oil 2754:Well logging 2631:Petrophysics 2598: 2313:Biogeography 2308:Hydrogeology 2298:Soil science 2278:Geochemistry 2037:Infiltration 1965:Cut and fill 1908:Soil nailing 1774:Permeability 1739:Bulk density 1553: 1456:Inclinometer 1379:Ram sounding 1264: 1168: 1164: 1141:, retrieved 1111: 1083:. Retrieved 1079: 1032:(15): 2880. 1029: 1025: 1001:. Retrieved 997: 968: 963: 955: 950: 907: 903: 897: 864: 860: 854: 827: 823: 813: 788: 784: 778: 770: 765: 757: 752: 727: 721: 715: 690: 686: 680: 637: 633: 627: 566: 561: 555: 537: 517: 494:Active sonar 491: 487: 477: 460: 453: 449: 436: 432: 423: 414:geotechnical 407: 382: 368: 356:salt diapirs 326: 321:Well logging 310: 301: 298: 294: 268: 257: 230: 226: 203: 199: 190: 183:, including 175:well logging 137:, including 127:, including 117:, including 85: 60: 44:hydrocarbons 40:fossil fuels 19: 18: 3730:Halliburton 3602:Phillips 66 3423:QatarEnergy 3393:Petrobangla 3328:KazMunayGas 3218:Supermajors 3167:heavy crude 3054:Prudhoe Bay 3034:Niger Delta 3014:Caspian Sea 2777:Concessions 2727:Measurement 2693:Geosteering 2676:Squeeze job 2586:Exploration 2535:Consumption 2494:Consumption 2487:Natural gas 2416:Bonny Light 2323:Archaeology 2047:Foundations 2020:Geomembrane 1903:Slurry wall 1842:Water table 1806:Interaction 1802:Structures 1789:Sensitivity 1586:Laboratory 603:Ore genesis 558:Crimean War 497:reception. 468:Archaeology 389:resistivity 208:subsurface 52:groundwater 3884:Geophysics 3878:Categories 3780:Transocean 3647:Tullow Oil 3637:TechnipFMC 3403:PetroChina 3241:ExxonMobil 3147:Shale band 3024:East Texas 2997:and fields 2811:Downstream 2764:Production 2671:Completion 2599:Geophysics 2540:Production 2499:Production 2436:Indonesian 2411:Argus Sour 2403:Benchmarks 2180:Mitigation 2162:Shear wave 2147:Earthquake 2142:Compaction 2127:Permafrost 2118:Phenomena/ 2015:Geotextile 1940:Embankment 1930:Excavation 1867:Earthworks 1827:Vegetation 1822:Topography 1744:Thixotropy 1734:Void ratio 1717:Properties 1615:Hydrometer 1360:Piezometer 1280:Core drill 1143:2023-03-10 1085:2023-03-10 1003:2023-03-27 917:1504.08340 634:Geophysics 619:References 472:See also: 316:refraction 278:kimberlite 249:pyrrhotite 151:, such as 95:Seismology 48:geothermal 42:and other 38:minerals; 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Index

geophysics
economic geology
Earth
ore
fossil fuels
hydrocarbons
geothermal
groundwater
unexploded ordnance
iron ore
silicate
electrical conductivity
sulfide minerals
Seismic tomography
Seismology
Reflection seismology
seismic refraction
Geodesy
gravity techniques
gravity gradiometry
Magnetic techniques
aeromagnetic surveys
Electrical techniques
electrical resistivity tomography
induced polarization
Electromagnetic methods
magnetotellurics
ground penetrating radar
transient/time-domain electromagnetics
SNMR

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