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CODAS Data from Oliktok Point, Beaufort Sea, Alaska

Published by Sandia National Laboratories | Department of Energy | Catalog Last Checked: March 23, 2026 at 09:42 PM | Dataset Last Updated: July 16, 2024 at 05:35 PM
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
@type dcat:Dataset
accessLevel public
bureauCode 
[
  "019:20"
]
contactPoint 
{
  "fn": "Michael G Baker",
  "@type": "vcard:Contact",
  "hasEmail": "mailto:mgbaker@sandia.gov"
}
dataQuality 
true
description 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
distribution 
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    "@type": "dcat:Distribution",
    "title": "Rapid Refreezing of a Marginal Ice Zone Across a Seafloor Distributed Acoustic Sensor",
    "format": "HTML",
    "accessURL": "https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2022GL099880",
    "mediaType": "text/html",
    "description": "We present results from a multi-seasonal acquisition of DAS data on a seafloor cable in the Beaufort Sea, Alaska."
  },
  {
    "@type": "dcat:Distribution",
    "title": "Observations of Ocean Surface Wave Attenuation in Sea Ice Using Seafloor Cables",
    "format": "HTML",
    "accessURL": "https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2023GL105243",
    "mediaType": "text/html",
    "description": "We demonstrate a novel method for persistent observation of wave-ice interactions using distributed acoustic sensing (DAS) along existing seafloor fiber optic telecommunications cables. "
  },
  {
    "@type": "dcat:Distribution",
    "title": "Tracking Local Sea Ice Extent in the Beaufort Sea Using Distributed Acoustic Sensing and Machine Learning",
    "format": "HTML",
    "accessURL": "https://doi.org/10.1785/0320230019",
    "mediaType": "text/html",
    "description": "We show that ambient noise recorded by fiber optic sensing technology deployed in an Arctic shallow marine seafloor environment can track sea ice extent."
  },
  {
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    "mediaType": "text/html",
    "description": "To evaluate the efficacy of DAS for continuous and in situ monitoring of polar environmental processes, we are collecting DAS data from a 40-km long section of seafloor telecommunications fiber located on the continental shelf of the Beaufort Sea, Alaska."
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    "title": "Channels_06100-07090.zip",
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    "description": "Every 10th DAS channel from 06100--07090"
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    "@type": "dcat:Distribution",
    "title": "Channels_09100-10090.zip",
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    "mediaType": "application/zip",
    "description": "Every 10th DAS channel from 13100--14090"
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    "@type": "dcat:Distribution",
    "title": "Channels_14100-15090.zip",
    "format": "zip",
    "accessURL": "https://mhkdr.openei.org/files/438/Channels_14100-15090.zip",
    "mediaType": "application/zip",
    "description": "Every 10th DAS channel from 14100--15090"
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    "@type": "dcat:Distribution",
    "title": "Channels_15100-16090.zip",
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    "accessURL": "https://mhkdr.openei.org/files/438/Channels_15100-16090.zip",
    "mediaType": "application/zip",
    "description": "Every 10th DAS channel from 15100--16090"
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    "@type": "dcat:Distribution",
    "title": "Channels_16100-17090.zip",
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    "mediaType": "application/zip",
    "description": "Every 10th DAS channel from 16100--17090"
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    "mediaType": "application/zip",
    "description": "Every 10th DAS channel from 17100--18090"
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    "@type": "dcat:Distribution",
    "title": "Channels_18100-18400.zip",
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    "accessURL": "https://mhkdr.openei.org/files/438/Channels_18100-18400.zip",
    "mediaType": "application/zip",
    "description": "Every 10th DAS channel from 18100--18400"
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]
DOI 10.15473/2205673
identifier https://data.openei.org/submissions/8033
issued 2023-08-08T06:00:00Z
keyword 
[
  "Alaska",
  "Beaufort Sea",
  "CODAS",
  "Cryosphere",
  "Distributed Acoustic Sensing",
  "Marine",
  "Oliktok Point",
  "environment",
  "raw data"
]
landingPage https://mhkdr.openei.org/submissions/438
license https://creativecommons.org/licenses/by/4.0/
modified 2024-07-16T17:35:34Z
programCode 
[
  "019:009"
]
projectLead Bill McShane
projectNumber NA0003525
projectTitle Cryosphere/Ocean Distributed Acoustic Sensing
publisher 
{
  "name": "Sandia National Laboratories",
  "@type": "org:Organization"
}
spatial 
"{"type":"Polygon","coordinates":[[[-150.5,70.4],[-149.5,70.4],[-149.5,70.9],[-150.5,70.9],[-150.5,70.4]]]}"
title CODAS Data from Oliktok Point, Beaufort Sea, Alaska

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