109:
on temporary sites that marched across the conterminous United States. The initial deployment, in August 2007, was in the western quarter of the United States. Since then the stations on the western edge were regularly relocated to the eastern edge at a rate of about four stations per week. The
117:. The density of the TA network — typical station spacing of about 70 km — provided a level of resolution not previously available in many parts of the country and provided finer details of the
261:; Zeitler, Peter; Levander, Alan; Humphreys, Gene; Karlstrom, Karl; Ekström, Goran; Carlson, Rick; Dixon, Tim; Gurnis, Michael; Shearer, Peter; van der Hilst, Rob (November 1999).
289:
76:
observations made on the Earth's surface to help determine the geologic history of North
America, as well as to better understand that geologic processes that are at work today.
159:
135:
was an additional 100+ permanent stations located on approximately 300 km spacings that provided a long-term reference frame. These also augmented the USGS
110:
Transportable Array reached the East Coast in 2013, and wound up in 2017, having occupied nearly 2000 sites. An archive of stations are listed online.
54:
113:
Geological structures can be mapped by observing how they affect seismic waves from local and distant earthquakes, a process known as
128:
was a pool of portable seismic instruments available for short-term high-density observations of particular areas of interest.
42:
262:
136:
162:
Facility Data
Services, operated by EarthScope Consortium (previously known as the IRIS Data Management Center).
46:
38:
219:
Kerr, Richard (14 June 2013). "Geophysical
Exploration Linking Deep Earth and Backyard Geology".
17:
171:
146:
measured naturally occurring electric and magnetic fields. It consisted of seven permanent
8:
58:
139:(ANSS), providing seismic observations in areas where instrumentation had been lacking.
114:
236:
27:
US earth science project collecting seismic images of the North
American lithosphere
228:
61:, with contributions from several other national and international organizations.
232:
258:
147:
33:(Seismic and Magnetotelluric Observatory) was one of the three components of the
49:
and were constructed, operated, and maintained as a collaborative effort with
283:
254:
240:
106:
118:
69:
34:
73:
65:
50:
253:
194:
290:
Seismological observatories, organisations and projects
158:
Data from these instruments are available from the NSF
72:. The data collected from USArray was integrated with
105:(TA) was a network of 400 high-quality broadband
55:Incorporated Research Institutions for Seismology
281:
64:A major goal of USArray was to collect detailed
150:(MT) stations and twenty portable stations.
37:project, the other two components being the
45:(SAFOD). The components were funded by the
84:USArray consists of four "observatories":
14:
282:
189:
187:
79:
43:San Andreas Fault Observatory at Depth
218:
184:
24:
153:
25:
301:
137:Advanced National Seismic System
247:
212:
121:under parts of North America.
13:
1:
233:10.1126/science.340.6138.1283
177:
68:images of the North American
7:
165:
47:National Science Foundation
10:
306:
97:the Magnetotelluric Array.
39:Plate Boundary Observatory
88:the Transportable Array.
172:Array Network Facility
94:the Reference Network.
144:Magnetotelluric Array
263:"USArray Initiative"
103:Transportable Array
80:Arrays and Networks
59:Stanford University
115:seismic tomography
91:the Flexible Array
133:Reference Network
16:(Redirected from
297:
274:
273:
272:. pp. 8–10.
267:
259:Rudnick, Roberta
251:
245:
244:
216:
210:
209:
207:
205:
191:
21:
305:
304:
300:
299:
298:
296:
295:
294:
280:
279:
278:
277:
265:
252:
248:
217:
213:
203:
201:
193:
192:
185:
180:
168:
156:
154:Data Management
148:magnetotelluric
82:
28:
23:
22:
15:
12:
11:
5:
303:
293:
292:
276:
275:
246:
211:
182:
181:
179:
176:
175:
174:
167:
164:
155:
152:
126:Flexible Array
99:
98:
95:
92:
89:
81:
78:
41:(PBO) and the
26:
9:
6:
4:
3:
2:
302:
291:
288:
287:
285:
271:
264:
260:
256:
255:Meltzer, Anne
250:
242:
238:
234:
230:
227:: 1283–1285.
226:
222:
215:
200:
196:
190:
188:
183:
173:
170:
169:
163:
161:
151:
149:
145:
140:
138:
134:
129:
127:
122:
120:
116:
111:
108:
104:
96:
93:
90:
87:
86:
85:
77:
75:
71:
67:
62:
60:
56:
52:
48:
44:
40:
36:
32:
19:
269:
249:
224:
220:
214:
202:. Retrieved
198:
157:
143:
141:
132:
130:
125:
123:
112:
107:seismographs
102:
100:
83:
63:
57:(IRIS), and
30:
29:
199:Usarray.org
119:lithosphere
70:lithosphere
178:References
35:Earthscope
270:GSA Today
204:14 August
195:"USArray"
284:Category
241:23766309
166:See also
74:geologic
221:Science
66:seismic
31:USArray
18:USARRAY
239:
53:, the
51:UNAVCO
266:(PDF)
237:PMID
206:2018
160:SAGE
142:The
131:The
124:The
101:The
229:doi
225:340
286::
268:.
257:;
235:.
223:.
197:.
186:^
243:.
231::
208:.
20:)
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.