Textual research of Wudu earthquake in 186 B.C. in Gansu Province, China and discussion on its causative structure

Yuan, Daoyang; Zhong-sheng, Lei; He, Wentao; Zhen, Xiong; Ge, Weipeng; Liu, Xingwang; Bai-chi, Liu

doi:10.1007/s11589-007-0696-5

Cited by 13 publications

(14 citation statements)

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“…In some versions of Chinese catalogs of historical earthquakes, the 1638 earthquake was listed with a magnitude of 5 1/2 [ Gu , ; IGCEA and HGFU , ], which is likely to be an underestimate. Recent studies of some moderate to strong earthquakes suggest that the magnitudes of historical earthquakes in Chinese catalogs can be underestimated by 0.5–1 unit [ Yuan et al ., ]. Furthermore, A.D. 1634 is 10 years before the demise of the Ming dynasty; textual recording of earthquake could be overlooked in towns where shaking was not severe enough.…”

Section: Event Size Estimationmentioning

confidence: 99%

Variability in magnitude of paleoearthquakes revealed by trenching and historical records, along the Haiyuan Fault, China

et al. 2015

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Paleoseismology provides fundamental data for generalizing earthquake recurrence behavior, by revealing past surface‐rupturing events. Determining the size of paleoseismic events is notoriously more challenging than their timing. Paleoearthquakes exposed in trenches are vaguely defined as large enough to break to the surface and often assumed to be similar in size. Here we show an example where the paleoseismic record includes events of both moderate and large magnitudes. At the Salt Lake site on the active left‐lateral Haiyuan Fault, northern Tibetan Plateau, a high‐resolution stratigraphic sequence recorded three and possibly four events since A.D. 1500, constrained by accelerator mass spectrometry 14C dating. Historical accounts of earthquake damage in the study region suggest that several earthquakes exposed in the trenches markedly differ in magnitude. With the exception of the most recent M~8 earthquake that occurred in A.D. 1920, two earlier events, which occurred in A.D. 1760 (or 1709) and 1638, respectively, are considerably smaller, with magnitude M < 7 and more likely M~6 or less. Thus, this section of the Haiyuan Fault that broke during moderate‐magnitude events failed again after a short interval during a large Mw 7.8–8.3 earthquake, as part of a larger multisegment rupture. Our study shows that moderate‐magnitude events can be preserved in the stratigraphy and exposed by paleoseismic trenching under ideal conditions, for instance, if sedimentation is fast enough and there is no hiatus in deposition. Eventually, the data presented add to the growing body of paleoseismic records containing events of different magnitudes with a large variability in rupture length and coseismic slip.

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Section: Event Size Estimationmentioning

confidence: 99%

Variability in magnitude of paleoearthquakes revealed by trenching and historical records, along the Haiyuan Fault, China

et al. 2015

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“…Note that in the Yushu segment, four intense earthquakes have occurred on the fault in the segment from Ganzi to Yushu since the 1856 Ganzi earthquake, including the 2010 Yushu earthquake, which was the most recent. The surface fault rupture passes through the entire fault segment; however, the region between Dengke and Yushu is unruptured (Dong et al, 2012;Yuan et al, 2011). In another part of the Yushu segment, surface rupture reaches 50 km because of the Ms7.1 earthquake in 2010.…”

Section: Slip Distribution Along Ganzi-yushu Faultmentioning

confidence: 99%

Present-day kinematics and seismic potential of the Ganzi-Yushu fault, eastern Tibetan plateau, constrained from InSAR

Zhao

Ji²,

Zhang³

et al. 2023

Front. Earth Sci.

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In recent years, earthquakes have occurred frequently on the southeastern edge of the Tibetan Plateau, and the seismic hazard is high. However, because of the remote location of the Ganzi-Yushu fault zone, no high-resolution geodetic measurements of this region have been made. The radar line-of-sight deformation field of the Ganzi-Yushu fault was obtained using seven-track ascending and descending Sentinel-A/B interferometric synthetic aperture radar (InSAR) data from 2014 to 2020. Using the InSAR and published Global Navigation Satellite System (GNSS) data, we calculated the 3D deformation field in the study area, investigated the segment-specific fault slip rate, and inverted the fault slip distribution pattern using the steepest descent method. We then evaluated the seismic hazard using the strain rate field and slip deficit rate. The main findings of this study include the following. 1) The slip rate of the Ganzi-Yushu fault gradually increases from 2.5 to 6.8 mm/yr from northwest to southeast. 2) A high-resolution strain rate map shows high-value anomalies in the Yushu and Dangjiang areas. 3) Our comprehensive analysis suggests that the seismic hazard of the Dangjiang and Dengke segments with high slip deficits cannot be ignored.

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“…The latter were previously associated with 'the ideals of a heroic and aristocratic society', and referred to as 'tsenpo', denoting power and strength, and also as rulers of 'tsen', the gods associated with mountains, high ground and cliffs (Kapstein 2000). Records of a 'large' earthquake and related geomorphological phenomena affecting the Tibetan border (839 -841 CE) (Table 2), possibly refer to the 842 CE event recorded in the Gansu Province, Tang Empire (Yuan et al 2014). This may have been seen as a sign of divine displeasure, not only causing devasting impacts (today high mountainous areas are particularly susceptible to 'cascade events' (Gardner and ), but also emphasising the King's inability to control the natural world.…”

Section: Adoption Of Buddhism In Tibet Linked To Climatic Upturnmentioning

confidence: 99%

Climate, environment and the fortunes of Buddhism during the Tibetan Empire 618-842 CE

Zou

Cheng

Cresswell

et al. 2022

Preprint

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The official adoption of Buddhism by the Tibetan state in the mid-8th Century (761-762 CE) was relatively late compared to its permeation from northern India to elsewhere in south and east Asia, due to the country’s geographical isolation. Whilst reasons for its adoption remain uncertain, it is thought that the religion provided a strong unifying influence permitting both the consolidation and subsequent expansion of the Tibetan Empire. Early historical records suggest that the religion was prohibited in 739-741 CE and 841-842 CE, the latter coinciding with the fall of the Tibetan Empire. This research presents an examination of Tibetan and Chinese historical records and fine-resolution palaeoclimatic reconstructions to demonstrate that the ‘oscillating fate’ of Buddhism during the Tibetan Empire (618-842 CE), was inextricably linked to regional climate change and to a series of natural disasters. Extreme meteorological events have significant present-day impacts on the geographically vulnerable Tibetan Plateau, and we propose that long-term climatic deterioration between mid-770s to the late 830s CE was likely to have been the most significant factor underpinning environmental deterioration and the eventual collapse of the rural economy, which undermined the Buddhist state in the 9th century CE and lead to the prohibition of the religion in both Tibet, and by the neighbouring Tang Dynasty.

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Textual research of Wudu earthquake in 186 B.C. in Gansu Province, China and discussion on its causative structure

Cited by 13 publications

References 0 publications

Variability in magnitude of paleoearthquakes revealed by trenching and historical records, along the Haiyuan Fault, China

Variability in magnitude of paleoearthquakes revealed by trenching and historical records, along the Haiyuan Fault, China

Present-day kinematics and seismic potential of the Ganzi-Yushu fault, eastern Tibetan plateau, constrained from InSAR

Climate, environment and the fortunes of Buddhism during the Tibetan Empire 618-842 CE

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