Point clouds derived from satellite imagery, Huaxian, China, 2013-2022

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Dataset Information

This dataset contains a ~100 km long section of the Huashan Fault which is related to the 1556 Huaxian Earthquake in China. The point cloud data were derived via photogrammetric methods by Leica Photogrammetry Suite built in ERDAS Imagine from data acquired by Airbus Defence and Space (Pleiades stereo optical imagery).

opentopoID: OTDS.092023.32649.1
DOI: https://doi.org/10.5069/G97H1GSR
Platform: Structure from Motion / Photogrammetry
Data Format: Point Cloud
Dataset Acknowledgement: N/A - Acknowledgement Guidance
Dataset Citation: Walker, R., Lei, S. (2023). Point clouds derived from satellite imagery, Huaxian, China, 2013-2022. Distributed by OpenTopography. https://doi.org/10.5069/G97H1GSR. Accessed: 2025-04-03
Survey Date: 12/30/2013 - 03/02/2022
Survey Area: 1,005.07 km2
Publication Date: 09/27/2023
Total Number of Points: 15,760,167 pts
Point Density: 0.02 pts/m2
Coordinates System:
Horizontal: WGS 84 / UTM zone 49N [EPSG: 32649]

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Spatial Extent

Show Data Files

    Point Cloud
  File Name Size Points Area (m2) Density  
1     dim_phr1a_p_201312300338530_sen_6164864101-1_dim_phr1a_p_201312300338013_sen_6164864101-1_py_2_0.las     66.82 MB     2,694,830     332,238,621     0.01         File Metadata    
SpatialReference: 
COMPD_CS["unknown",PROJCS["WGS 84 / UTM zone 49N",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",111],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","32649"]],VERT_CS["IMAGINE GeoTIFF SupportERDAS IMAGINE 2020  16.6.0.1217Unable to match Vertical Coordinate System to a VerticalCSTypeGeoKey valueEllipsoid = WGS 84Datum = WGS 84",VERT_DATUM["unknown",2005],UNIT["metre",1.0,AUTHORITY["EPSG","9001"]],AXIS["Up",UP]]]

Geographic Coordinates (Lat, Lon, Elevation) - EPSG:4326
North-East (Lat, Lon, Elevation): (34.522871333362005, 109.73960174406871, 776.599)
South-West (Lat, Lon, Elevation): (34.433963124203345, 109.53017965566099, 277.223)

Projected Coordinates (X, Y) - EPSG:32649
North-East (X, Y): (384319.5936, 3820854.557)
South-West (X, Y): (364954.0279, 3811254.252)

Classifications:
Class 0 (Created, never classified)2,689,514
Class 7 (Low Point (noise))5,316
2     dim_phr1a_p_202005150331114_sen_6164863101-1_dim_phr1a_p_202005150330434_sen_6164863101-1_py_3_0.las     25.84 MB     1,042,226     167,020,436     0.01         File Metadata    
SpatialReference: 
COMPD_CS["unknown",PROJCS["WGS 84 / UTM zone 49N",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",111],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","32649"]],VERT_CS["IMAGINE GeoTIFF SupportERDAS IMAGINE 2020  16.6.0.1217Unable to match Vertical Coordinate System to a VerticalCSTypeGeoKey valueEllipsoid = WGS 84Datum = WGS 84",VERT_DATUM["unknown",2005],UNIT["metre",1.0,AUTHORITY["EPSG","9001"]],AXIS["Up",UP]]]

Geographic Coordinates (Lat, Lon, Elevation) - EPSG:4326
North-East (Lat, Lon, Elevation): (34.49042705698585, 109.34709679609696, 781.147)
South-West (Lat, Lon, Elevation): (34.35112040977952, 109.16540657167937, 263.113)

Projected Coordinates (X, Y) - EPSG:32649
North-East (X, Y): (348233.1641, 3817775.574)
South-West (X, Y): (331268.973, 3802613.214)

Classifications:
Class 0 (Created, never classified)1,041,057
Class 7 (Low Point (noise))1,169
3     dim_phr1a_p_202202240330536_sen_6194619101-1_dim_phr1a_p_202202240331088_sen_6194620101-1_py_2_0.las     148.40 MB     5,984,778     131,342,477     0.05         File Metadata    
SpatialReference: 
COMPD_CS["unknown",PROJCS["WGS 84 / UTM zone 49N",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",111],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","32649"]],VERT_CS["IMAGINE GeoTIFF SupportERDAS IMAGINE 2020  16.6.0.1217Unable to match Vertical Coordinate System to a VerticalCSTypeGeoKey valueEllipsoid = WGS 84Datum = WGS 84",VERT_DATUM["unknown",2005],UNIT["metre",1.0,AUTHORITY["EPSG","9001"]],AXIS["Up",UP]]]

Geographic Coordinates (Lat, Lon, Elevation) - EPSG:4326
North-East (Lat, Lon, Elevation): (34.548868702178254, 109.94949463756055, 1250.168)
South-West (Lat, Lon, Elevation): (34.437032070144795, 109.73132175417018, 254.328)

Projected Coordinates (X, Y) - EPSG:32649
North-East (X, Y): (403614.5653, 3823517.31)
South-West (X, Y): (383440.2576, 3811344.786)

Classifications:
Class 0 (Created, never classified)5,977,105
Class 7 (Low Point (noise))7,673
4     dim_phr1b_p_202004250334285_sen_6164865101-1_dim_phr1b_p_202004250334594_sen_6164865101-1_py_2_0.las     133.89 MB     5,399,688     149,986,672     0.04         File Metadata    
SpatialReference: 
COMPD_CS["unknown",PROJCS["WGS 84 / UTM zone 49N",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",111],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","32649"]],VERT_CS["IMAGINE GeoTIFF SupportERDAS IMAGINE 2020  16.6.0.1217Unable to match Vertical Coordinate System to a VerticalCSTypeGeoKey valueEllipsoid = WGS 84Datum = WGS 84",VERT_DATUM["unknown",2005],UNIT["metre",1.0,AUTHORITY["EPSG","9001"]],AXIS["Up",UP]]]

Geographic Coordinates (Lat, Lon, Elevation) - EPSG:4326
North-East (Lat, Lon, Elevation): (34.52315089781688, 109.5315348332062, 678.091)
South-West (Lat, Lon, Elevation): (34.42787861881186, 109.3125698212033, 259.195)

Projected Coordinates (X, Y) - EPSG:32649
North-East (X, Y): (365222.0878, 3821143.359)
South-West (X, Y): (344946.9965, 3810891.066)

Classifications:
Class 0 (Created, never classified)5,394,661
Class 7 (Low Point (noise))5,027
5     dim_phr1b_p_202203020334328_sen_6206363101-1_dim_phr1b_p_202203020334471_sen_6206364101-1_py_2_0.las     15.84 MB     638,645     224,482,570     0         File Metadata    
SpatialReference: 
COMPD_CS["unknown",PROJCS["WGS 84 / UTM zone 49N",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",111],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","32649"]],VERT_CS["IMAGINE GeoTIFF SupportERDAS IMAGINE 2020  16.6.0.1217Unable to match Vertical Coordinate System to a VerticalCSTypeGeoKey valueEllipsoid = WGS 84Datum = WGS 84",VERT_DATUM["unknown",2005],UNIT["metre",1.0,AUTHORITY["EPSG","9001"]],AXIS["Up",UP]]]

Geographic Coordinates (Lat, Lon, Elevation) - EPSG:4326
North-East (Lat, Lon, Elevation): (34.5461107517835, 109.97311039599072, 1138.328)
South-West (Lat, Lon, Elevation): (34.49430909968429, 109.93703937507077, 252.743)

Projected Coordinates (X, Y) - EPSG:32649
North-East (X, Y): (405778.322, 3823189.189)
South-West (X, Y): (402408.1098, 3817478.913)

Classifications:
Class 0 (Created, never classified)636,457
Class 7 (Low Point (noise))2,188
  Summary 390.78 MB     15,760,167     1,005,070,776     0.02      
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