Deformed submarine terraces in Puget Sound, Pacific Northwest indicate only one M > ~7.5 earthquake on the Seattle fault zone in the past 11,000 years

Seafloor terraces around ~50 m depth are abundant beneath Puget Sound. These terraces have been attributed to a sea-level lowstand ca. 11 ka. Depths to the terraces across upper plate faults in Puget Sound can be used as a record for tectonic deformation since that time.  
The data consist of bathymetric and seismic reflection data from Puget Sound, Washington, USA. They have been interpreted to show an upward offset in bathymetric terraces across the Seattle fault zone. This data repository includes the following files necessary to reproduce these results:
basemap.pdf: Bathymetric and topographic map of the study area (central Puget Sound, USA) showing the location of bathymetric profiles and fault zones used in the study.
bathymetric_datasets.xlsx: Spreadsheet describing all public bathymetric datasets used in the study.
profiles.zip: Text files of bathymetric profiles used in the study. Each profile consists of a distance and depth extracted from the bathymetric files listed in ..., Dataset 5 (images.pdf) shows images from two seismic reflection surveys collected in Puget Sound, USA:
2019 CHIRP seismic reflection survey
This survey was collected by the authors in October, 2019 aboard the R/V Weelander, a 15 ft vessel operated by the University of Washington School of Oceanography. The survey was collected with an ultra-high resolution, 2-16 kHZ Edgetech 216s CHIRP system and crossed Elliott Bay, the Duwamish Waterway, and terraces offshore Bainbridge Island. Data were processed using a standard CHIRP processing workflow that included heave correction and conversion to envelope. After processing, the data were collected in an interpretation project along with complementary datasets using the IHS Kingdom Suite software. Two-way travel time in seconds was converted to depth using a constant velocity of 1500 m/s. Depths were not tide-corrected, and we do not use absolute depths in this study.
1982 minisparker legacy data
This survey was collected in 1982 by Dr. Mark Ho..., # Data from: Deformed submarine terraces in Puget Sound, USA indicate only one M > ~7.5 earthquake on the Seattle fault zone in the past 11,000 years

Dataset DOI: [10.5061/dryad.wh70rxx2v](https://doi.org/10.5061/dryad.wh70rxx2v)

## Description of the data and file structure

This dataset consists of supporting data for the manuscript \"Deformed submarine terraces in Puget Sound, USA indicate only one M > ~7.5 earthquake on the Seattle fault zone in the past 11,000 years.\" Seafloor terraces around ~50 m depth are abundant beneath Puget Sound.  These terraces have been attributed to a sea-level lowstand ca. 11 ka. Depths to the terraces across upper plate faults in Puget Sound can be used as a record for tectonic deformation since that time.  

The data consist of bathymetric and seismic reflection data from Puget Sound, Washington, USA. They have been interpreted to show an upward offset in bathymetric terraces across the Seattle fault zone.

### Files and variables

#### File: bathyme...,