Dataset for Kinematic Changes Throughout the 2013-2021 Surge Cycle of Sít' Kusá
Summary & Purpose
This data repository contains digital elevation models, terminus area traces, and velocity maps for Sít' Kusá (Turner Glacier) associated with a paper documenting the glacier's 2013-2021 surge cycle.
Digital elevation models:
These are ~2-m resolution Digital Elevation Models (DEMs) generated from WorldView image stereo pairs over Sít' Kusá (Turner Glacier), southeast Alaska, and are in UTM 7N projection (EPSG:32607). All files are labeled by the date of acquisition with format YYYYMMDD. The geotiffs from 2013-2019 were provided directly by the Polar Geospatial Center. The 20180122_UTM_mosaic.tif was generated from the 20180117 and 20180128 DSMs. The 2021 DSM was generated using the NASA AMES Stereo Pipeline. The standard vertical uncertainty for these DSMs is 2 meters.
Terminus area traces:
The terminus area polygons were traced from 2013-2022 using the tie points from Nolan and others (2021) and are available as layers in the SK_term_pos.shp. The surface area (area_km2) and source image (IMG_ID) associated with each traced polygon can be found in the feature attributes. The IMG_ID contains the date associated with the trace.
Velocity maps:
The velocity maps produced using a custom template-matching algorithm called autoRIFT (https://github.com/nasa-jpl/autoRIFT) are available as geotiffs labeled by the acquisition dates of the satellite image pairs utilized (YYYYMMDD), the chip size (also the spatial resolution of the map) in meters, and the platform (S2 = Sentinel-2, LS = Landsat 8). For each file, Band 1 corresponds to the x-direction velocity (vx), Band 2 corresponds to the y-direction velocity (vy), and Band 3 corresponds to the magnitude of velocity, i.e., speed. All velocities are in meters/year.
The accompanying Table1_autorift_vmap_parameters_SK.csv contains additional data corresponding to the provided velocity maps, including the date separation of the image pair in days (dt_days), the central date for the pair (mid_date), the chip size (min_chip_size), the percentage of pixels with data over the glacier outline (data_percent), and the velocity errors over stable surfaces in the x-direction (err_vx), y-direction (err_vy), and velocity magnitude (err_v) in meters/day. The Sentinel-1 velocity maps were made through the Alaska Satellite Facility OnDemand autoRIFT and are not provided as a part of the dataset.
Date of Publication or Submission
2-16-2023
DOI
https://doi.org/10.18122/cryogars_data.3.boisestate
Funding Citation
This research is funded by NASA FINNEST Award 80NSSC21K1640 and NSF Award ANS1954006. WorldView DSMs provided by the Polar Geospatial Center under NSF-OPP awards 1032681, 144691, and 1542736.
Single Dataset or Series?
Series
Data Format
DSMs have extension *.tif. Velocity maps are *.tif files and the accompanying table with additional information is the *.csv. The terminus area traces are contained in a *.shp file. The README is a *.txt file.
File Size
~6Gb
Data Attributes
See README.txt
Time Period
2013-2021
Update Frequency
Other
Privacy and Confidentiality Statement
Boise State is explicitly compliant with federal and state laws surrounding data privacy including the protection of personal financial information through the Gramm-Leach-Bliley Act, personal medical information through HIPAA, HITECH and other regulations. All human subject data (e.g., surveys) has been collected and managed only by personnel with adequate human subject protection certification.
Use Restrictions
Users are free to share, copy, distribute and use the dataset; to create or produce works from the dataset; to adapt, modify, transform and build upon the dataset as long as the user attributes any public use of the dataset, or works produced from the dataset, referencing the author(s) and DOI link. For any use or redistribution of the dataset, or works produced from it, the user must make clear to others the license of the dataset and keep intact any notices on the original dataset.
Disclaimer of Warranty
BOISE STATE UNIVERSITY MAKES NO REPRESENTATIONS ABOUT THE SUITABILITY OF THE INFORMATION CONTAINED IN OR PROVIDED AS PART OF THE SYSTEM FOR ANY PURPOSE. ALL SUCH INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. BOISE STATE UNIVERSITY HEREBY DISCLAIMS ALL WARRANTIES AND CONDITIONS WITH REGARD TO THIS INFORMATION, INCLUDING ALL WARRANTIES AND CONDITIONS OF MERCHANTABILITY, WHETHER EXPRESS, IMPLIED OR STATUTORY, FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT.
IN NO EVENT SHALL BOISE STATE UNIVERSITY BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF INFORMATION AVAILABLE FROM THE SYSTEM.
THE INFORMATION PROVIDED BY THE SYSTEM COULD INCLUDE TECHNICAL INACCURACIES OR TYPOGRAPHICAL ERRORS. CHANGES ARE PERIODICALLY ADDED TO THE INFORMATION HEREIN. COMPANY AND/OR ITS RESPECTIVE SUPPLIERS MAY MAKE IMPROVEMENTS AND/OR CHANGES IN THE PRODUCT(S) AND/OR THE PROGRAM(S) DESCRIBED HEREIN AT ANY TIME, WITH OR WITHOUT NOTICE TO YOU.
BOISE STATE UNIVERSITY DOES NOT MAKE ANY ASSURANCES WITH REGARD TO THE ACCURACY OF THE RESULTS OR OUTPUT THAT DERIVES FROM USE OF THE SYSTEM.
Recommended Citation
Liu, Jukes; Enderlin, Ellyn; Bartholomaus, Timothy C.; Terleth, Yoram; Beaud, Flavien; and Mikesell, Thomas Dylan. (2023). Dataset for Kinematic Changes Throughout the 2013-2021 Surge Cycle of Sít' Kusá [Data set]. Retrieved from https://doi.org/10.18122/cryogars_data.3.boisestate
Comments
Additional contributor: Mike Cloutier (Polar Geospatial Center)
Due to the size of this dataset's component files, if you would prefer to access this data via Globus, please email ScholarWorks@boisestate.edu.