Tsunamis caused by submarine slope failures along western Great Bahama Bank

被引：39

作者：

Schnyder, Jara S. D. ^{[1
]}

Eberli, Gregor P. ^{[1
]}

Kirby, James T. ^{[2
]}

Shi, Fengyan ^{[2
]}

Tehranirad, Babak ^{[2
]}

Mulder, Thierry ^{[3
]}

Ducassou, Emmanuelle ^{[3
]}

Hebbeln, Dierk ^{[4
]}

Wintersteller, Paul ^{[4
]}

机构：

[1] Univ Miami, CSL Ctr Carbonate Res, 4600 Rickenbacker Cswy, Miami, FL 33149 USA

[2] Univ Delaware, Ctr Appl Coastal Res, Newark, DE 19716 USA

[3] Univ Bordeaux, UMR EPOC 5805, F-33615 Pessac, France

[4] Univ Bremen, MARUM Ctr Marine Environm Sci, Bremen, Germany

来源：

SCIENTIFIC REPORTS | 2016年 / 6卷

基金：

美国国家科学基金会;

关键词：

MARGIN; ARCHITECTURE; HAZARD; LANDSLIDES; MORPHOLOGY; COLLAPSE; FLORIDA; IMPACT; WAVES;

D O I：

10.1038/srep35925

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Submarine slope failures are a likely cause for tsunami generation along the East Coast of the United States. Among potential source areas for such tsunamis are submarine landslides and margin collapses of Bahamian platforms. Numerical models of past events, which have been identified using high-resolution multibeam bathymetric data, reveal possible tsunami impact on Bimini, the Florida Keys, and northern Cuba. Tsunamis caused by slope failures with terminal landslide velocity of 20 ms(-1) will either dissipate while traveling through the Straits of Florida, or generate a maximum wave of 1.5 m at the Florida coast. Modeling a worst-case scenario with a calculated terminal landslide velocity generates a wave of 4.5 m height. The modeled margin collapse in southwestern Great Bahama Bank potentially has a high impact on northern Cuba, with wave heights between 3.3 to 9.5 m depending on the collapse velocity. The short distance and travel time from the source areas to densely populated coastal areas would make the Florida Keys and Miami vulnerable to such low-probability but high-impact events.

引用

页数：9