Provenance and earthquake signature of the last deglacial Xinmocun lacustrine sediments at Diexi, East Tibet

Jiang, Hanchao; Mao, Xurui; Xu, Hongyan; Yang, Haijun; Ma, Xiaolin; Zhong, Ning; Li, Yanhao

doi:10.1016/j.geomorph.2013.08.032

Cited by 58 publications

(83 citation statements)

References 97 publications

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“…Tohver et al, 2013;Jiang et al, 2014), as also done in this special issue. This is important, since research of seismites is carried out ever more frequently, and ever more details become available -even though several problems still remain unsolved.…”

Section: Stage Of Adolescencementioning

confidence: 78%

The life cycle of seismite research

Loon

2014

Geologos

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Section: Stage Of Adolescencementioning

confidence: 78%

The life cycle of seismite research

Loon

2014

Geologos

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“…1, 2a). Small ancient lakes, such as Diaolin, are common and formed when alpine landslides associated with strong earthquakes blocked tributaries of the Minjiang River Jiang et al 2014;Xu et al 2014). Between 6.2 and 0.93 m, the lacustrine sequence is composed of grayish silty clay, clayey silt, and sandy silt, with visible massive structure and horizontal bedding (Fig.…”

Section: Study Sitementioning

confidence: 99%

“…About 70-90 % of the regional precipitation falls between June and September in association with the EASM. During winter and spring, localized foehn winds, driven by the AWM, transport dust to the study area Tang et al 2013;Jiang et al 2014;Xu et al 2015). There is strong regional vegetation zonation with altitude, characterized by broadleaf and subalpine coniferous forests, arid valley shrubs, and subalpine meadows (Zhang et al 2007).…”

Section: Study Sitementioning

confidence: 99%

Decadal- to centennial-scale East Asian summer monsoon variability during the Medieval Climate Anomaly reconstructed from an eastern Tibet lacustrine sequence

Jiang

Shevenell

et al. 2015

J Paleolimnol

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Instrumental data suggest changes in the intensity of the East Asian Monsoon system over the past century, possibly in response to anthropogenic climate change. To understand modern observations and explore past variations in East Asian summer monsoon (EASM) strength, we conducted grain size, geochemical, and pollen assemblage studies on a lacustrine sediment sequence from an earthquakedammed paleolake on the eastern Tibetan Plateau. The chronology, generated from eight optically stimulated luminescence and two pollen concentrate radiocarbon dates, indicates deposition of the lacustrine sequence between 600 and 1250 C.E. Fine grain sizes and low arboreal pollen percentages are associated with regional aridity (790-916, 1020-1080, 1125-1150 C.E.) and a weak EASM, whereas coarser grain sizes and higher arboreal pollen percentages are associated with increased precipitation and a stronger EASM (1090-1125, 1160-1230 C.E.). Although observed variations in our paleodata are predominantly driven by climate, the sequence is also influenced by regional tectonics, as evident from seismites, a *90-year hiatus (917-1004 C.E.) during a period of regional seismicity, and an abrupt increase in regional sedimentation rates. Human disturbance is also observed to increase during weak EASM intervals. On decadal to millennial scales, our paleodata are highly correlated with reconstructions of EASM strength from northeastern China and sea surface temperature reconstructions from the tropical Pacific Ocean, indicating that the Medieval Climate Anomaly was associated with a strong EASM and prolonged La Niña-like state. Our data also suggest decadal-scale EASM variability associated with solar intensity, but an inconsistent response suggests additional complexity in EASM forcing. The inverse relationship between modern EASM weakening with anthropogenic warming, and a strong EASM during the warm Medieval Climate Anomaly, suggests that the complexity of the decadal to centennial-scale EASM response may be related to changes in the mean state of the tropical Pacific Ocean.

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“…1), the landslide area is situated at the eastern margin of the Tibetan Plateau, an area with active tectonics that may result from the collision between the Indian and the Eurasian Plates, undergoing abrupt topographic changes from the Sichuan Basin (Jiang et al 2014). In particular, it is located in the Longmenshan-Minshan Fault zones, where local landforms of high mountains and deep valleys in this area were largely influenced by such active tectonics.…”

Section: Description Of the Maoxian Landslidementioning

confidence: 99%

“…In Maoxian, the average annual precipitation is about 491 mm, 70-90% of which falls in the raining season between June and September (Jiang et al 2014). During June 2017, the raining was intermittent, generally without extremely intense events.…”

Section: Description Of the Maoxian Landslidementioning

confidence: 99%