Great tsunamigenic earthquakes during the past 1000 yr on the Alaska megathrust

Abstract

'Great tsunamigenic earthquakes during the last 1000 years on the Alaska megathrust. ', Geology., 42 (8). pp. 687-690.Further information on publisher's website: Use policyThe full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-prot purposes provided that:• a full bibliographic reference is made to the original source • a link is made to the metadata record in DRO • the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permission of the copyright holders.Please consult the full DRO policy for further details.

Tsunami recurrence in the eastern Alaska-Aleutian arc: A Holocene stratigraphic record from Chirikof Island, Alaska

“…Historical accounts suggest that upper plate faulting during the 1880 earthquake produced a Chirikof Island tsunami, which we infer deposited bed C. Approximately 600 km to the northeast of Chirikof Island, Liberty et al (2013) identified an area of mostly submarine upper plate faults with high rates of 1964196419641964Mahrt, 2006Gilpin, 1995Carver and Plafker, 2008Hutchinson and Crowell, 2007Shennan et al, 2014b 1788 1788…”

“…Elsewhere in the eastern Alaska-Aleutian arc, information on the recurrence of high tsunamis or the great earthquakes likely to have accompanied them over the past 3500 yr is limited (Carver and Plafker, 2008;Shennan et al, 2014aShennan et al, , 2014bKelsey et al, 2015). Carver and Plafker (2008) compiled radio carbon ages from studies of Kodiak Island coastal stratigraphy by Carver and Gilpin (1992), Gilpin et al (1994), and Gilpin (1995) to infer the times of four mega thrust earthquakes prior to the 1964 earthquake, at least three of which were accompanied by tsunamis (Fig.…”

“…12). Shennan et al (2014b) use diatom analysis of tidal stratigraphy to identify subsidence followed by a tsunami during the 1788 earthquake at four estuaries in northeastern Kodiak Island. Similar evidence at other sites led them to infer rupture of the Kodiak segment of the megathrust ca.…”

“…1A;Nishenko and Jacob, 1990;Vallier et al, 1994;Carver and Plafker, 2008;Ryan et al, 2012b;Ruppert et al, 2013;Butler et al, 2014;Shennan et al, 2014b). That the Aleutian arc is capable of sending damaging tsunamis across the Pacific basin is illustrated by those produced by the series of mid-twentieth century M 8-9 ruptures in the central and eastern Aleutian arc, in 1946, 1957, 1964, and 1965(Butler, 2012Ross et …”

A systematic review of geological evidence for Holocene earthquakes and tsunamis along the Nankai-Suruga Trough, Japan

“…Earthquakes and tsunamis along the Nankai-Suruga Trough have been historically documented from as early as the 7 th century AD (Ando, 1975b;Ishibashi, 1999Ishibashi, , 2004, with the most recent great earthquakes occurring in AD 1944 and1946. Geological records of past earthquakes and tsunamis provide alternative lines of evidence, complementing historical approaches (e.g. Atwater et al, 2005;Cisternas et al, 2005;Jankaew et al, 2008;Sawai et al, 2012;Shennan et al, 2014a). Previous reviews by Komatsubara et al (2006a) and Komatsubara and Fujiwara (2007) summarise the spatial and temporal distribution of proposed palaeoseismic evidence along the Nankai-Suruga Trough.…”