GPS monitoring data from spider units on the post-disaster 2014 Oso landslide, Snohomish County, Washington

Dates

Publication Date: 2021-06-22
Start Date: 2014-04-02
End Date: 2014-05-06

Citation

Reid, M.E., LaHusen, R.G., and Lockett, C.G., 2021, GPS monitoring data from spider units on the post-disaster 2014 Oso landslide, Snohomish County, Washington: U.S. Geological Survey data release, https://doi.org/10.5066/P9TTJFGU.

Summary

Data in this release record ground-surface positions obtained during post-disaster emergency response following the 2014 catastrophic Oso (SR 530) landslide, Snohomish County, Washington. Global Positioning System (GPS) data were collected using three USGS GPS-seismometer spider units deployed adjacent to (OSO1), upslope of (OSO2), and on (OSO3) the landslide (see image for locations) for about five weeks. Details of the post-disaster response as well as the spider units are described in the accompanying publication. Positions were determined in near real-time relative to a base-station GPS receiver (OSO0) located on stable ground less than 2 km from the landslide using static, differential GPS processing techniques. The spider positions [...]

Summary

Data in this release record ground-surface positions obtained during post-disaster emergency response following the 2014 catastrophic Oso (SR 530) landslide, Snohomish County, Washington. Global Positioning System (GPS) data were collected using three USGS GPS-seismometer spider units deployed adjacent to (OSO1), upslope of (OSO2), and on (OSO3) the landslide (see image for locations) for about five weeks. Details of the post-disaster response as well as the spider units are described in the accompanying publication. Positions were determined in near real-time relative to a base-station GPS receiver (OSO0) located on stable ground less than 2 km from the landslide using static, differential GPS processing techniques. The spider positions over time were computed using GPS L1-only data collected every 15 seconds and processed about every 10 minutes using the previous 3-hour periods of data. Data are presented as latitude, longitude, and ellipsoid height in the World Geodetic System 1984 (WGS 84) coordinate system with times in Coordinated Universal Time (UTC). Horizontal coordinates are also presented as converted into Universal Transverse Mercator (UTM) values. Differences in horizontal and 3D positions over time, relative to the initial spider locations, are included. Time gaps in the data sets indicate that insufficient GPS data were available to obtain fixed ambiguity, high quality, static solutions during the gap time periods. Details of the GPS processing techniques are further described in the Procedure section of the FGDC Metadata. Seismic data from the same spider units are available through IRIS. This data release includes: 1) image showing locations of the three GPS-seismic spider units relative to the Oso landslide, 2) initial positions (WGS 84) of the three spider units and the reference base station, OSO0, and 3) three files containing ground-surface positions and horizontal and 3D movement amounts for OSO1, OSO2, and OSO3 spiders over the monitoring period.

Contacts

Point of Contact :: Mark E Reid, Volcano Science Center
Originator :: Mark E Reid, Richard G Lahusen, Christopher G Lockett
Metadata Contact :: Mark E Reid, Volcano Science Center
Publisher :: U.S. Geological Survey
Distributor :: U.S. Geological Survey - ScienceBase
SDC Data Owner :: Volcano Science Center
USGS Mission Area :: Natural Hazards

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Oso_GPSmonitoring_metadata.xml “Metadata” Original FGDC Metadata	View	14.58 KB	application/fgdc+xml
Oso_USGS_spider_initial_positions.txt “Oso 2014 spider initial postions”		529 Bytes	text/plain
OSO1_spider_GPSpositions.csv “OSO1 spider GPS positions”		243.15 KB	text/csv
OSO2_spider_GPSpositions.csv “OSO2 spider GPS positions”		75.26 KB	text/csv
OSO3_spider_GPSpositions.csv “OSO3 spider GPS positions”		1.38 MB	text/csv
Oso_USGS_spider_location_image.png “Oso 2014 spider location image”		12.08 MB	image/png

Related External Resources

Type: Related Primary Publication

Reid, M.E., Godt, J.W., LaHusen, R.G., Slaughter, S.L., Badger, T.C., Collins, B.D., Schulz, W.H., Baum, R.L., Coe, J.A., Harp, E.L., Schmidt, K.M., Iverson, R.M., Smith, J.B., Haugerud, R.A., and George, D.L., When hazard avoidance is not an option: lessons learned from monitoring the postdisaster Oso landslide, USA: Landslides, https://doi.org/10.1007/s10346-021-01686-6	https://doi.org/10.1007/s10346-021-01686-6

Purpose

These data were collected as part of a post-disaster response effort following the 2014 Oso landslide. In particular, changes in GPS-derived positions were used to evaluate ground movement during the monitoring period. Overall landslide monitoring was performed in collaboration with Snohomish County, the Washington State Department of Natural Resources, and the Washington State Department of Transportation. Partial funding for monitoring was provided by the Federal Emergency Management Agency.

GPS monitoring data from spider units on the post-disaster 2014 Oso landslide, Snohomish County, Washington

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