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and estimates of co-seismic (during the earthquake) slip. A total of about 100 km of rupture have been mapped on the
Dangjiang fault segment. A maximum left-lateral offset of 3.3 m has been measured and an average offset of 2.2 m. These measurements have been used to calculate a magnitude of
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to the north from the
Quiangtang Block to the south. The western part of the overall fault system has three main segments, from the west the Dangjiang, Yushu and Ganzi faults. The estimated slip rate on the Dangjiang segment is about 6–7 mm per year.
420:
Qiao, X.; Zhou, Y.; Zhang, P. (2022). "Along-strike variation in fault structural maturity and seismic moment deficits on the Yushu-Ganzi-Xianshuihe fault system revealed by strain accumulation and regional seismicity".
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The
Dangjian segment shows evidence of several previous ruptures. The lack of seismic activity on this fault since 1738 means that sufficient slip has occurred to generate an earthquake of M
337:"Co-Seismic Surface Ruptures of the CE 1738 M 7.6 Dangjiang Earthquake Along the NW Continuation of the Xianshuihe Fault Zone and Tectonic Implications for the Central Tibetan Plateau"
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National
Geophysical Data Center / World Data Service (NGDC/WDS): NCEI/WDS Global Significant Earthquake Database. NOAA National Centers for Environmental Information (1972).
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is spreading eastwards. The plateau is divided into several blocks bounded by large WNW-ESE trending left lateral
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Estimates of casualties for this event vary. Sources mention death tolls of 261, 336 and 500.
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The magnitude of this earthquake has been calculated from observations of
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fault zones. The
Xianshuihe fault system separates the
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387:"Significant Earthquake Information"
210:On 23 December 1738 the province of
423:Earth and Planetary Science Letters
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443:10.1016/j.epsl.2022.117799
341:Frontiers in Earth Science
151:, Diangjiang Fault segment
80:23 December 1738
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20:1738 Dangjiang earthquake
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229:Xianshuihe fault system
149:Xianshuihe fault system
297:Future seismic hazard
468:Earthquakes in China
353:2022FrEaS..10.0891Y
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68:Show map of Qinghai
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16:Earthquake in China
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463:1730s earthquakes
214:was struck by an
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129:33.3°N 96.6°E
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398:. Retrieved
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247:between the
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261:strike-slip
160:strike-slip
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457:Categories
309:References
272:Earthquake
216:earthquake
201:Casualties
189:MMI VIII (
134:33.3; 96.6
84:1738-12-23
245:collision
183:intensity
108:Epicenter
92:Magnitude
251:and the
431:Bibcode
349:Bibcode
212:Qinghai
204:261–500
174:Qinghai
120:96°36′E
117:33°18′N
82: (
400:4 July
289:Impact
191:Severe
257:crust
170:China
145:Fault
402:2024
181:Max.
156:Type
95:7.6
439:doi
427:596
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100:w
98:M
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