DOI: https://doi.org/10.5069/G9QJ7F8K
OT Collection ID: OT.062016.32648.1
OT Collection Name: East Helanshan Fault, northern China
Short Name: CN14_Middleton
Collection Platform: Structure from Motion / Photogrammetry

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Download and Access Products: 
	1. Point Cloud Data
		opentopoID: OTLAS.062016.32648.1
		Data Processing: https://portal.opentopography.org/lidarDataset?opentopoID=OTLAS.062016.32648.1


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Collection Overview: This dataset contains a 100 km long section of the East Helanshan Fault on the western side of the Yinchuan Graben in northern China. This fault was the site of the devastating 1739 Yinchuan earthquake. Surface fault scarps are visible in the point cloud for much of the fault length. The point cloud data were constructed via photogrammetric methods from data acquired by Airbus Defence and Space (Pleiades 1A) and funded by the Natural Environment Research Council (NERC), UK. For further details see: Middleton, T. A., R. T. Walker, B. Parsons, Q. Lei, Y. Zhou, and Z. Ren (2016), A major, intraplate, normal-faulting earthquake: The 1739 Yinchuan event in northern China, J. Geophys. Res. Solid Earth, 121, 293-320, doi: 10.1002/2015JB012355.

Dataset Acknowledgement: Point cloud constructed from data acquired by Airbus Defence and Space (Pleiades 1A) and funded by the Natural Environment Research Council (NERC), UK. See: Middleton, T. A., R. T. Walker, B. Parsons, Q. Lei, Y. Zhou, and Z. Ren (2016), A major, Intraplate, normal-faulting earthquake: The 1739 Yinchuan event in northern China, J. Geophys. Res. Solid Earth, 121, 293-320, doi: 10.1002/2015JB012355.

Dataset Citation: East Helanshan Fault, northern China. Distributed by OpenTopography. https://doi.org/10.5069/G9QJ7F8K . Accessed: 2024-04-27

Use License: Not Provided

Dataset Keywords: East Helanshan Fault, Yinchuan basin, Yinchuan Graben, China, intraplate fault, lidar

Survey Date: 04/23/2014 - 07/25/2014
Publication Date: 07/04/2016

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Data Provider and Roles:
	1. Natural Environment Research Council, UK
	Role: Funder
	Url: https://nerc.ukri.org/

	2. Earthquakes without Frontiers
	Role: Funder
	Url: http://ewf.nerc.ac.uk/

	3. Looking inside the Continents from Space
	Role: Funder
	Url: https://www.see.leeds.ac.uk/research/igt/research-projects/looking-inside-the-continents-of-space/

	4. Centre for Observation and Modelling of Earthquakes and Tectonics
	Role: Funder
	Url: https://comet.nerc.ac.uk/

	5. Institute of Geology, China Earthquake Administration
	Role: Partner
	Url: http://en.igl.earthquake.cn/


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Total number of points: 759,122,077 pts

Area: 100 km^2

Point Density: 7.59 pts/m^2

Classifications: 
	Class 0 - Never classified: 758,664,739
	Class 7 - Low Point (low noise): 457,338
Coordinates System: 
	Horizontal: WGS84 / UTM Zone 48N Meters [EPSG: 32648]
	Vertical: WGS84 [EPSG: 4326]

Survey Report: 

LAS Validation Data Report: http://cloud.sdsc.edu/v1/AUTH_opentopography/www/lasReports/CN14_Middleton.html

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Dataset Extent in KMZ format: https://portal.opentopography.org/getKml?otCollectionID=OT.062016.32648.1&download=true

Dataset Spatial Bounds:
	North: 39.2938493245861°
	South: 38.6105314878806°
	East: 106.699331691854°
	West: 105.943529459068°