Počet záznamů: 1
Landslides and fluvial response to landsliding induced by the 1933 Diexi earthquake, Minjiang River, eastern Tibetan Plateau
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SYSNO ASEP 0544659 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Landslides and fluvial response to landsliding induced by the 1933 Diexi earthquake, Minjiang River, eastern Tibetan Plateau Tvůrce(i) Dai, L. (CN)
Fan, X. (CN)
Jansen, John D. (GFU-E) ORCID, SAI
Xu, Q. (CN)Zdroj.dok. Landslides - ISSN 1612-510X
Roč. 18, č. 9 (2021), s. 3011-3025Poč.str. 15 s. Forma vydání Tištěná - P Jazyk dok. eng - angličtina Země vyd. DE - Německo Klíč. slova Diexi earthquake ; landslide dam ; sediment yield ; fluvial response ; erosion ; Tibetan Plateau Obor OECD Physical geography Způsob publikování Omezený přístup Institucionální podpora GFU-E - RVO:67985530 UT WOS 000666887100001 EID SCOPUS 85108830660 DOI 10.1007/s10346-021-01717-2 Anotace On 25 August 1933, a 7.5-magnitude earthquake struck the eastern margin of the Tibetan Plateau in Sichuan, China. The Diexi earthquake is among the largest known geohazard events worldwide and is frequently cited by those studying the effects of large earthquakes. And yet, the attention focused on this event has failed to deliver a clear picture of landslides and their geomorphic impacts-key attributes of the Diexi earthquake and its aftermath remain obscure and debated. By integrating present-day LiDAR topographic data with existing records (including studies published in Chinese), and a series of unique archival photographs (from 1910, 1920, and 1934), we present the first inventory of coseismic landslides from the epicentral region of this catastrophic 1933 event. We find that the earthquake-triggered landslides were mainly of shallow to deep rock/debris fall/avalanche type, containing mass detached from steep slopes at the top of the mountain ridge source. We reinterpreted three major landslide dams on the Minjiang River based on their geomorphology and sedimentology, and we reconstructed the processes of impoundment and the maximum area of the dammed lake that breached 45 days after the earthquake. Since 1933, we estimate that 43.15-47.68 million m(3) of post-earthquake sediment has been delivered to valley floors from the erosion of the three landslide dams, with a sediment yield of up to 131.71 t km(-2) year(-1). Retrospective studies of the effects of historical earthquakes are challenging, but long-term observations like these are the cornerstone of emerging knowledge of earthquake-induced landsliding and related landscape response. Pracoviště Geofyzikální ústav Kontakt Hana Krejzlíková, kniha@ig.cas.cz, Tel.: 267 103 028 Rok sběru 2022 Elektronická adresa https://link.springer.com/article/10.1007/s10346-021-01717-2
Počet záznamů: 1