Skip Links

USGS - science for a changing world

Open-File Report 2007–1188

Development of a Global Slope Dataset for Estimation of Landslide Occurrence Resulting from Earthquakes

By Kristine L. Verdin, Jonathan Godt, Chris Funk, Diego Pedreros, Bruce Worstell, and James Verdin

Thumbnail of and link to report PDF (2.3 MB)Download Publication
Open-File Report
PDF (2.3 MB)
Right-Click to 'Download' or 'Save As'

Landslides resulting from earthquakes can cause widespread loss of life and damage to critical infrastructure. The U.S. Geological Survey (USGS) has developed an alarm system, PAGER (Prompt Assessment of Global Earthquakes for Response), that aims to provide timely information to emergency relief organizations on the impact of earthquakes. Landslides are responsible for many of the damaging effects following large earthquakes in mountainous regions, and thus data defining the topographic relief and slope are critical to the PAGER system. A new global topographic dataset was developed to aid in rapidly estimating landslide potential following large earthquakes. We used the remotely-sensed elevation data collected as part of the Shuttle Radar Topography Mission (SRTM) to generate a slope dataset with nearly global coverage. Slopes from the SRTM data, computed at 3-arc-second resolution, were summarized at 30-arc-second resolution, along with statistics developed to describe the distribution of slope within each 30-arc-second pixel. Because there are many small areas lacking SRTM data and the northern limit of the SRTM mission was lat 60ºN., statistical methods referencing other elevation data were used to fill the voids within the dataset and to extrapolate the data north of 60º. The dataset will be used in the PAGER system to rapidly assess the susceptibility of areas to landsliding following large earthquakes.

Version 1.0

Posted October 2007

Suggested citation:

Verdin, K.L., Godt, J.W., Funk, C., Pedreros, D., Worstell, B., Verdin, J., 2007, Development of a global slope dataset for estimation of landslide occurrence resulting from earthquakes: Colorado: U.S. Geological Survey, Open-File Report 2007-1188, 25 p.

Part or all of this report is presented in Portable Document Format (PDF); the latest version of Adobe Acrobat Reader or similar software is required to view it. Download the latest version of Acrobat Reader, free of charge or go to for free tools that allow visually impaired users to read PDF files.

Accessibility FOIA Privacy Policies and Notices

Take Pride in America home page. FirstGov button U.S. Department of the Interior | U.S. Geological Survey
Questions or Assistance: Contact USGS
Last modified: Wednesday, 07-Dec-2016 20:23:51 EST