Late Holocene great earthquakes in the eastern part of the Aleutian megathrust

Abstract

(2014) 'Late Holocene great earthquakes in the eastern part of the Aleutian megathrust.', Quaternary science reviews., 84 . pp. 86-97. Further information on publisher's website:http://dx.doi.org/10. 1016/j.quascirev.2013.11.010 Publisher's copyright statement: NOTICE: this is the author's version of a work that was accepted for publication in Quaternary Science Reviews. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reected in this document. Changes may have been made to this work since it was submitted for publication. A denitive version was subsequently published in Quaternary Science Reviews, 84, 2014, http://dx.doi.org/10.1016/j.quascirev.2013.11.010. Additional information: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.

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

“…The short intervals between Nankai-Suruga earthquakes, known from the historical record to include periods of just hours to a few years, prevent the use of radiocarbon dating to establish unequivocal correlations between palaeoseismic evidence at different sites. Such issues are less often encountered where intervals exceeding several centuries separate recorded palaeoearthquakes, as appears to be the case in Alaska (Shennan et al, 2014b), and where earthquake timing is constrained by very high resolution chronologies, such as those based on annual varves (e.g. Moernaut et al, 2014).…”

Constraints on regional drivers of relative sea-level change around Cordova, Alaska

“…RSL constraints from other places to the east, such as Katalla (Shennan et al, 2014) and the Bering Glacier foreland …”

“…We add an earthquake cycle influence to our model, basing the intervals on observations of regional patterns (Carver and Plafker, 2008;Shennan et al, 2014), assuming ~1.5m coseismic uplift, as in 1964 (Plafker, 1969), ~30% recovery since then and no net tectonic motion over multiple cycles (RSL 2 in Figure 8). …”

“…• a simple EDC model within the range of published values, with deformation similar to AD 1964 (Plafker, 1969) and a recurrence pattern established from regional correlations (Carver and Plafker, 2008;Shennan et al, 2014);…”

“…Plafker (1969) estimates coseismic uplift at Point Whitshed of 1.7 m, from raised barnacles, and ~1.9 m at the Cordova tide gauge, ~13 km to the northeast. Paleoseismic investigations record ten great earthquakes in the last 5000 years at sites in the Copper River Delta (Carver and Plafker, 2008;Plafker et al, 1992;Shennan et al, 2014), a likely consequence of rupturing of one or more segments of the Alaska--Aleutian megathrust ).…”