OpenTopography is pleased to announce the release of the SRTM15+ V2.1 global bathymetry and topography dataset. This dataset is the latest iteration of the SRTM+ digital elevation model (DEM) where the "plus" indicates the addition of ocean bathymetry from shipboard soundings and satellite-derived predicted depths. This DEM is a global elevation grid with a spatial sampling interval of 15 arc seconds (approximately 500 x 500 m pixel size at the equator).
OpenTopography is happy to announce the release of an on-demand canopy height model tool. Canopy height models are a measurement of the height of trees, buildings, and other structures above the ground topography. This product is used in a variety of forestry applications including tracking vegetation and trees in a forest over time, calculating biomass, and estimating leaf area index.
OpenTopography invites you to join us for a one hour live webinar on Monday January 11 at 2-3 EST/11-12 PST on topographic differencing. Learn about vertical and 3D topographic differencing and perform differencing on OpenTopography's web interface with one of 60 datasets pairs with differencing enabled.
A new Structure from Motion (SfM) dataset comprising well georeferenced, high-resolution topography and orthomosaics for part of the Lost River fault zone, Idaho has been released. The dataset was collected by Dr. Michael Bunds and Christopher DuRoss from May 2015 - May 2016 and covers ~6.1 km of surface rupture from the the Mw 6.9 1983 Borah Peak Earthquake. Point clouds and digital surface models (DSMs) were generated from low-altitude aerial photographs using Structure-from-Motion and multi-view stereo processing.
New datasets are being continually added to the USGS 3DEP Amazon Web Services (AWS) bucket. If you are a U.S. academic, you can gain access to this valuable dataset through OpenTopography! Since August 2020, the coverage has increased by an additional 175 datasets, or 4.4 trillion new lidar points.
A recording of the webinar is available here:
OpenTopography is pleased to announce the release of two new lidar datasets covering New Zealand's capital Wellington, as well as the Banks Peninsula. The dataset, "Wellington City, New Zealand 2019" has an average point spacing of over 20 pts/m2 and covers Wellington and its surrounding areas. The dataset, "Banks Peninsula, Canterbury, New Zealand 2018" was collected for Environment Canterbury Regional Council and covers the Banks Peninsula.
OpenTopography is pleased to announce the release of a new lidar dataset covering approximately 230 km2 covering Cedar Mesa and Bears Ears National Monument, Utah (Shash Jáa Unit). This dataset was collected for a study to explore the dynamic impacts of environmental change and biomass harvesting on woodland ecosystems and traditional livelihoods. Data was collected by NCALM, an NSF-funded center that supports the use of airborne laser mapping technology (a.k.a.
OpenTopography is pleased to release a structure-from-motion small Uncrewed Aerial System (sUAS) dataset that covers 3 km2 along the creeping section of the central San Andreas fault. This dataset was collected in October 2017 by Michael Bunds and Nathan Toke from Utah Valley University, Chelsea Scott from Arizona State University, and several undergraduate students in Utah Valley University’s Geospatial Field Methods course.