CODAS Data from Oliktok Point, Beaufort Sea, Alaska

Published by Sandia National Laboratories | Department of Energy | Metadata Last Checked: June 28, 2025 | Last Modified: 2024-07-16T17:35:34Z

Cryosphere/Ocean Distributed Acoustic Sensing (CODAS) data collected from the Beaufort Sea, Alaska, using ~37.4 km of dark telecommunications fiber located at Oliktok Point, Alaska. Data were collected with a Silixa iDAS, using 10 m gauge length, 2 m spatial resolution, and 1000 Hz sample rate. Provided here are the DAS-recorded time series for the rapid refreeze event described in Baker & Abbott (2022) (see link below). This covers a date range of 2021-11-10 15:00 UTC to 2021-11-11 17:00 UTC. Data have been decimated to 100 Hz and 20 m (i.e., every 10th channel for 1831 channels, total), as used in Baker & Abbott (2022). Data have been extracted from raw format into 1-hour long .sac* files and organized into directories by channel number, spanning channels 100 to 18400. Time series units are nano-strainrate (nm/m/s). For distribution, data have been compressed into .zip files containing all time series files for 100 channels. *For information on the Seismic Analysis Code (SAC) file format: https://seiscode.iris.washington.edu/projects/sac

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Complete Metadata

bureauCode	[ "019:20" ]
dataQuality	true
DOI	10.15473/2205673
identifier	https://data.openei.org/submissions/8033
issued	2023-08-08T06:00:00Z
landingPage	https://mhkdr.openei.org/submissions/438
programCode	[ "019:009" ]
projectLead	Bill McShane
projectNumber	NA0003525
projectTitle	Cryosphere/Ocean Distributed Acoustic Sensing
spatial	{"type":"Polygon","coordinates":[[[-150.5,70.4],[-149.5,70.4],[-149.5,70.9],[-150.5,70.9],[-150.5,70.4]]]}