Skip to main content

Interferometric synthetic aperture radar data from 2020 for landslides at Barry Arm Fjord, Alaska

Dates

Distribution
2020-07-08
Publication Date
Revision
2020-07-27
Revision
2020-08-21
Revision
2020-10-22
Last Revision
2020-11-13

Citation

Schaefer, L.N., Coe, J.A., Godt, J.W., and Wolken, G.J., 2020, Interferometric synthetic aperture radar data from 2020 for landslides at Barry Arm Fjord, Alaska (ver. 1.4, November 2020): U.S. Geological Survey data release, https://doi.org/10.5066/P9Z04LNK.

Summary

Subaerial landslides at the head of Barry Arm Fjord in southern Alaska could generate tsunamis (if they rapidly failed into the Fjord) and are therefore a potential threat to people, marine interests, and infrastructure throughout the Prince William Sound region. Knowledge of ongoing landslide movement is essential to understanding the threat posed by the landslides. Because of the landslides' remote location, field-based ground monitoring is challenging. Alternatively, periodic acquisition and interferometric processing of satellite-based synthetic aperture radar data provide an accurate means to remotely monitor landslide movement. Interferometric synthetic aperture radar (InSAR) uses two Synthetic Aperture Radar (SAR) scenes taken [...]

Contacts

Attached Files

Click on title to download individual files attached to this item.

Figure1.jpg
“Annotated photo showing landslide areas”
thumbnail 4.56 MB
20200526_20200619.zip
“Zipped folder containing pdf, geotiff, and kmz for 26 May 2020-19 Jun. 2020”
3.95 MB
20200602_20200626.zip
“Zipped folder containing pdf, geotiff, and kmz for 02 Jun. 2020-26 Jun. 2020”
35.61 MB
20200619_20200713.zip
“Zipped folder containing pdf, geotiff, and kmz for 19 Jun. 2020-13 Jul. 2020”
47.18 MB
20200626_20200720.zip
“Zipped folder containing pdf, geotiff, and kmz for 26 Jun. 2020-20 Jul. 2020”
37.7 MB
20200713_20200806.zip
“Zipped folder containing pdf, geotiff, and kmz for 13 Jul. 2020-06 Aug. 2020”
253.19 MB
20200720_20200813.zip
“Zipped folder containing pdf, geotiff, and kmz for 20 Jul. 2020-13 Aug. 2020”
42.45 MB
20200806_20200830.zip
“Zipped folder containing pdf, geotiff, and kmz for 06 Aug. 2020-30 Aug. 2020”
50.48 MB
20200813_20200906.zip
“Zipped folder containing pdf, geotiff, and kmz for 13 Aug. 2020-06 Sep. 2020”
49.92 MB
20200830_20200923.zip
“Zipped folder containing pdf, geotiff, and kmz for 30 Aug. 2020-23 Sep. 2020”
39.07 MB
20200906_20200930.zip
“Zipped folder containing pdf, geotiff, and kmz for 06 Sep. 2020-30 Sep. 2020”
38.67 MB
20200923_20201017.zip
“Zipped folder containing pdf, geotiff, and kmz for 23 Sep. 2020-17 Oct. 2020”
56.4 MB
20200930_20201024.zip
“Zipped folder containing pdf, geotiff, and kmz for 30 Sep. 2020-24 Oct. 2020”
12.17 MB
Methodology.txt 1.85 KB
SAR_scene_details.txt
“SAR scene metadata”
9.84 KB
VersionHistoryReadme.txt 1.69 KB

Purpose

We present the interferometric results of tasked RADARSAT-2 SAR data from 2020 at Barry Arm Fjord in southern Alaska. Data were acquired from two ultrafine beam modes, U19 and U15, that are acquired over the landslide every 24-days, beginning on May 26, 2020 and June 2, 2020, respectively. Each time period will have an associated unwrapped interferogram (units of line-of-sight displacement in centimeters) in geotiff and kmz format, along with a pdf that will highlight ground features and provide scale and satellite look direction information. For each time period, we describe interferogram results for three areas surrounding Barry Glacier: Landslide A, Landslide B, and the Northwest-facing slope. Results will be added to this data release as new scenes are acquired and processed. Artefacts within the scenes (e.g., due to atmospheric conditions or changing topographic conditions) can be identified by using several independent interferograms, and we will continue to monitor and assess the presence of artefacts over time.
Annotated photo showing landslide areas
Annotated photo showing landslide areas

Map

Spatial Services

ScienceBase WMS

Communities

  • USGS Data Release Products

Associated Items

Tags

Provenance

Revision 1.1 on July 27, 2020. Revision 1.2 on August 21, 2020. Revision 1.3 on October 22, 2020. Revision 1.4 on November 13, 2020. To review the changes that were made, see "VersionHistoryReadme.txt" in the attached files section

Additional Information

Identifiers

Type Scheme Key
DOI https://www.sciencebase.gov/vocab/category/item/identifier doi:10.5066/P9Z04LNK

Item Actions

View Item as ...

Save Item as ...

View Item...