DOI: https://doi.org/10.5069/G9154F8F
OT Collection ID: OT.062023.32651.1
OT Collection Name: Bedrock River Channels of the Taiwan Central Range, 2018-2020
Short Name: TW18_Carr
Collection Platform: Structure from Motion / Photogrammetry

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Download and Access Products: 
	1. Point Cloud Data
		opentopoID: OTLAS.062023.32651.1
		Data Processing: https://portal.opentopography.org/lidarDataset?opentopoID=OTLAS.062023.32651.1

	2. Raster
		opentopoID: OTSDEM.062023.32651.1
		Data Processing: https://portal.opentopography.org/raster?opentopoID=OTSDEM.062023.32651.1


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Collection Overview: Dataset includes UAV derived structure-from-motion point clouds and orthomosaic imagery of bedrock river corridors across the Taiwan Central Range, complimentary to the publication:   Carr, J.C., DiBiase, R.A., Yeh, E.C., Fisher, D.M., and Kirby, E. Rock properties and sediment caliber govern bedrock river morphology across the Taiwan Central Range. Sci. Adv. 9, eadg6794(2023). DOI:10.1126/sciadv.adg6794

Dataset Acknowledgement: Dataset collection was funded by the NSF grant EAR-1933203. We thank En-Chao Yeh, Tsai-Wei Chen, Cassie Hanagan, Ping-Chuan Chen, Guo-Ying Peng, Hao-Cheng Sun, Huong Pham, Guang-Hao Chen, Wei-Hao Hsu, Emily Loucks, Kelly Shih, Bo-Han He, and Eva Yin for valuable field assistance in gathering this data

Dataset Citation: Carr, J.C, DiBiase, R.A. (2023). Bedrock River channels of the Taiwan Central Range, 2018-2020. Distributed by OpenTopography. https://doi.org/10.5069/G9154F8F. Accessed: 2025-04-20

Use License: CC BY 4.0

Dataset Keywords: Taiwan, river, bedrock river, boulders

Survey Date: 03/16/2018 - 01/09/2020
Publication Date: 06/15/2023

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Data Provider and Roles:
	1. Pennsylvania State University
	Role: Principal Investigator
	Url: Not Available.

	2. Pennsylvania State University
	Role: Principal Investigator
	Url: Not Available.

	3. Penn State Office of Global Programs
	Role: Funder
	Url: https://www.psu.edu/

	4. National Science Foundation - EAR-1933203
	Role: Funder
	Url: https://nsf.gov/


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Total number of points: 6,318,982,964 pts

Area: 10.39 km^2

Point Density: 608.18 pts/m^2

Classifications: 
	Class 0 - Never classified: 4,931,126,602
	Class 1 - Unclassified: 284,457,358
	Class 4 - Medium Vegetation: 131,440
	Class 5 - High Vegetation: 632,757,450
	Class 6 - Building: 3,743,527
	Class 9 - Water: 430,549,332
	Class 11 - Road Surface: 490,164
	Class 18 - High Noise: 23,468,008
	Class 66 - User Definable: 11,583,467
	Class 67 - User Definable: 675,616
Coordinates System: 
	Horizontal: WGS84 / UTM Zone 51N Meters [EPSG: 32651]
	Vertical: WGS84 (Ellipsoid)

Survey Report: https://object.cloud.sdsc.edu:443/v1/AUTH_opentopography/www/metadata/TW18_Carr_metadata.pdf

LAS Validation Data Report: https://portal.opentopography.org/lasReport?opentopoID=OTLAS.062023.32651.1

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Dataset Boundary in GeoJSON format: 
	Point Cloud: https://raw.githubusercontent.com/OpenTopography/Data_Catalog_Spatial_Boundaries/main/OpenTopography_Point_Cloud_Lidar/TW18_Carr.geojson
	Raster: https://raw.githubusercontent.com/OpenTopography/Data_Catalog_Spatial_Boundaries/main/OpenTopography_Raster/TW18_Carr.geojson

Dataset Extent (Bounding Box):
	North: 24.20271376021403°
	South: 22.674435617370452°
	East: 121.58417015265061°
	West: 120.85449153637644°