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Cascadia Tsunami Deposit Database

March 1, 2003

The Cascadia Tsunami Deposit Database contains data on the location and sedimentological properties of tsunami deposits found along the Cascadia margin. Data have been compiled from 52 studies, documenting 59 sites from northern California to Vancouver Island, British Columbia that contain known or potential tsunami deposits. Bibliographical references are provided for all sites included in the database. Cascadia tsunami deposits are usually seen as anomalous sand layers in coastal marsh or lake sediments. The studies cited in the database use numerous criteria based on sedimentary characteristics to distinguish tsunami deposits from sand layers deposited by other processes, such as river flooding and storm surges. Several studies cited in the database contain evidence for more than one tsunami at a site. Data categories include age, thickness, layering, grainsize, and other sedimentological characteristics of Cascadia tsunami deposits. The database documents the variability observed in tsunami deposits found along the Cascadia margin.

Citation Information

Publication Year 2003
Title Cascadia Tsunami Deposit Database
DOI 10.3133/ofr0313
Authors Robert Peters, Bruce Jaffe, Guy Gelfenbaum, Curt Peterson
Publication Type Report
Publication Subtype USGS Numbered Series
Series Title Open-File Report
Series Number 2003-13
Index ID ofr0313
Record Source USGS Publications Warehouse
USGS Organization Pacific Coastal and Marine Science Center