High Resolution Topography of West Helanshan Fault, Northern China 2018

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This dataset comprises a 2-m-resolution digital elevation model (DEM) (WorldView3-DEM.tif) and 0.5-m-resolution orthophotograph (WorldView3-DOM.png) of the West Helanshan Fault (Northern China) which is a Holocene active right-lateral strike-slip fault located at the junction of the Tibetan Plateau, Alashan, and Ordos blocks. The dataset covers a 6 km wide swath along an approximately 50 km long section of the fault (the dataset extent can be found in West_Helanshan_Fault.kmz). The DEM was built from the WorldView-3 panchromatic stereo images acquired on 5 July 2018 based on the photogrammetry method, and the orthophotograph was created based on the generated DEM. Two local areas along the fault are heavily obscured by clouds in the WorldView-3 images. Thus, we used a small four-rotor Unmanned Aerial Vehicle (UAV), the Motoarsky MS670, to acquire images of the two areas on 27 September 2018. Based on the Structure-from-Motion (SfM) method, we finally obtained DEM with a spatial resolution of 0.1 m (UAV-DEM1.tif and UAV-DEM2.tif) and orthophotograph with a spatial resolution of 0.03 m (UAV-DOM1.png and UAV-DOM2.png) for the two local areas. More details of this dataset can be found in Bi, H., Zheng, W., Lei, Q., Zhang, P., Zeng, J., & Chen, G. (2020). Surface slip distribution along the West Helanshan Fault, Northern China and its implications for fault behavior. Journal of Geophysical Research: Solid Earth, doi: 10.1029/2020JB019983. (https://agupubs.onlinelibrary.wiley.com/doi/abs/10.1029/2020JB019983).

opentopoID: OTDS.062020.32648.1
Platform: Structure from Motion / Photogrammetry
Data Format: Raster, Images
Dataset Acknowledgement: This dataset is jointly funded by the Ministry of Science and Technology of the People’s Republic of China, the National Natural Science Foundation of China, and the Institute of Geology, China Earthquake Administration.
Dataset Citation: Bi, H., Zheng, W., Lei, Q., Zhang, P., Zeng, J., & Chen, G. (2020). High Resolution Topography of West Helanshan Fault, Northern China 2018. Digital Globe (WorldView-3 satellite images) . Distributed by OpenTopography. https://doi.org/10.5069/G9NS0S1Q. Accessed: 2022-10-05
Survey Date: 07/05/2018 - 09/27/2018
Survey Area: 237.85 km2
Publication Date: 06/29/2020
Point Density: 0.8 pts/m2
Coordinates System:
Horizontal: WGS 84 / UTM zone 48N [EPSG: 32648]
Vertical: WGS84 [EPSG: 4326]



Spatial Extent
    Raster Data
  File Name Size Resolution Dimensions Layer Type  
1     UAV-DEM1.tif     360.46 MB     0.14 meter     9255 x 32036                 View Detail    
  SpatialReference:
PROJCS["WGS 84 / UTM zone 48N", GEOGCS["WGS 84", DATUM["WGS_1984", SPHEROID["WGS 84",6378137,298.257223563, AUTHORITY["EPSG","7030"]], AUTHORITY["EPSG","6326"]], PRIMEM["Greenwich",0], UNIT["degree",0.0174532925199433], AUTHORITY["EPSG","4326"]], PROJECTION["Transverse_Mercator"], PARAMETER["latitude_of_origin",0], PARAMETER["central_meridian",105], PARAMETER["scale_factor",0.9996], PARAMETER["false_easting",500000], PARAMETER["false_northing",0], UNIT["metre",1, AUTHORITY["EPSG","9001"]], AUTHORITY["EPSG","32648"]]
Lat/Lon Boundary:
North-East (lat,lon) [38.70409366766462, 105.68771111396534]
South-West (lat,lon) [38.66238334878233, 105.67190935642729]
Coordinates Boundary:
North-East (X,Y) [559797.668, 4284164.781]
South-West (X,Y) [558457.59, 4279526.129]
2     UAV-DEM2.tif     568.69 MB     0.12 meter     17227 x 37867                 View Detail    
  SpatialReference:
PROJCS["WGS 84 / UTM zone 48N", GEOGCS["WGS 84", DATUM["WGS_1984", SPHEROID["WGS 84",6378137,298.257223563, AUTHORITY["EPSG","7030"]], AUTHORITY["EPSG","6326"]], PRIMEM["Greenwich",0, AUTHORITY["EPSG","8901"]], UNIT["degree",0.0174532925199433, AUTHORITY["EPSG","9122"]], AUTHORITY["EPSG","4326"]], PROJECTION["Transverse_Mercator"], PARAMETER["latitude_of_origin",0], PARAMETER["central_meridian",105], PARAMETER["scale_factor",0.9996], PARAMETER["false_easting",500000], PARAMETER["false_northing",0], UNIT["metre",1, AUTHORITY["EPSG","9001"]], AXIS["Easting",EAST], AXIS["Northing",NORTH], AUTHORITY["EPSG","32648"]]
Lat/Lon Boundary:
North-East (lat,lon) [38.64586759281397, 105.68813664711809]
South-West (lat,lon) [38.603414667673164, 105.66303458047035]
Coordinates Boundary:
North-East (X,Y) [559883.164, 4277703.906]
South-West (X,Y) [557732.735, 4272977.006]
3     WorldView3-DEM.tif     592.33 MB     2 meter     6084 x 25243                 View Detail    
  SpatialReference:
PROJCS["WGS 84 / UTM zone 48N", GEOGCS["WGS 84", DATUM["WGS_1984", SPHEROID["WGS 84",6378137,298.257223563, AUTHORITY["EPSG","7030"]], AUTHORITY["EPSG","6326"]], PRIMEM["Greenwich",0, AUTHORITY["EPSG","8901"]], UNIT["degree",0.0174532925199433, AUTHORITY["EPSG","9122"]], AUTHORITY["EPSG","4326"]], PROJECTION["Transverse_Mercator"], PARAMETER["latitude_of_origin",0], PARAMETER["central_meridian",105], PARAMETER["scale_factor",0.9996], PARAMETER["false_easting",500000], PARAMETER["false_northing",0], UNIT["metre",1, AUTHORITY["EPSG","9001"]], AXIS["Easting",EAST], AXIS["Northing",NORTH], AUTHORITY["EPSG","32648"]]
Lat/Lon Boundary:
North-East (lat,lon) [38.87060472226734, 105.77948836944316]
South-West (lat,lon) [38.41650970059492, 105.63520286791939]
Coordinates Boundary:
North-East (X,Y) [567620.478, 4302706.284]
South-West (X,Y) [555452.478, 4252220.284]
  Summary 1.49 GB            
    Images Files
  File Name Size Dimensions  
1     WorldView3-DOM.png     874.53 MB     24303 x 100827        
2     UAV-DOM1.png     20.96 MB     1703 x 7489        
3     UAV-DOM2.png     35.34 MB     3104 x 7848        
  Summary 930.82 MB        
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