Presence and absence of a widespread unit of Holocene marine sand observed in 2008 to 2017 in tsunami-hazard assessments on Anegada, British Virgin Islands

Publication Date

2023-10-27

Start Date

2008-03-19

End Date

2017-03-15

Atwater, Brian F., compiler, 2023, Field evidence noted in 2008 to 2023 that pertains to sea floods of the past millennium on Anegada, British Virgin Islands: U.S. Geological Survey data release, https://doi.org/10.5066/P9TLLBOC.

This data release has the overall purpose of supporting assessments of hazards from unusually large tsunamis generated in the northeast Caribbean. An immediate application is to support a manuscript, in preparation in 2023, that asks whether the precolonial sea flood terminated precolonial conch fishing from Anegada. For use in testing simulations storms and tsunamis, the sand mapped as "pervasive" indicates marine inundation more reliably than does sand mapped as "patchy," and sand mapped as "scant" provides insufficient field evidence for having been deposited by a sea flood. The distribution of sand classified in https://doi.org/10.1130/GES01356.1 as "pervasive" and "patchy" was used in Figure 11 of https://doi.org/10.1016/j.earscirev.2022.104018 to test appraise a posited tsunami source.

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