Field Activity 2024-629-FA

Identifier 2024-629-FA
Alternate names SEKI Debris Flow Mapping
Purpose Conduct field observations of debris flow in cooperation with NPS partners
Location South Fork Kaweah River
Summary Aerial imagery and GPS data were acquired using UAS platform.
Info derived Field observations, elevations
Platform
on foot
survey conducted on foot
Itinerary
Start Three Rivers, CA 2024-04-29
End Three Rivers, CA 2024-05-03
Days in the field 5
Bounds
West -118.77138767
East -118.74990247
North 36.3530795
South 36.33106161

Personnel

Organization
2885 Mission Street
Santa Cruz, CA95060
(831) 460-7401
Principal investigators Amy East
Crew members
Joshua Logan
Scientist, Staff
Information specialist(s)
Joshua Logan
Specialist, Information
Affiliate principal NPS Geologic Resources Division

Data types and categories

Data category: Imagery, Location-Elevation
Data type: Photo, Navigation

Equipment used

Equipment Usage description Data types Datasets
Structure from Motion - UAS Photo 5
Trimble R10 Benchmarks, LIDAR, Navigation, Profiles, Transects 1

Datasets

Datasets produced in this activity

Dataset name Equipment Description Dataset contact
Aerial images from a UAS survey of the debris flow at South Fork Campground, Sequoia National Park, CA Structure from Motion - UAS This portion of the data release presents aerial images of the debris flow at South Fork Campground in Sequoia National Park. The images were acquired during an uncrewed aerial systems (UAS) survey on 30 April 2024, conducted under authorization from the National Park Service. Joshua Logan
Aerial video acquired during the UAS survey of the debris flow at South Fork Campground, Sequoia National Park, CA Structure from Motion - UAS This portion of the data release presents aerial video acquired during the uncrewed aerial systems (UAS) survey of the debris flow at South Fork Campground in Sequoia National Park, conducted under authorization from the National Park Service. The video shows low-altitude oblique and nadir perspectives of the lower 1.3 kilometers of the debris flow. The video is being included as part of the data release to provide additional context for the geohazards assessment of the area. Joshua Logan
Digital Surface Model (DSM) from UAS survey of the debris flow at South Fork Campground, Sequoia National Park, CA Structure from Motion - UAS This portion of the data release presents a high-resolution Digital Surface Models (DSM) of the debris flow at South Fork Campground in Sequoia National Park. The DSM has a resolution of 10 centimeters per pixel and was derived from structure-from-motion (SfM) photogrammetry using aerial imagery acquired during an uncrewed aerial systems (UAS) survey on 30 April 2024. Joshua Logan
Orthomosaic imagery from the UAS survey of the debris flow at South Fork Campground, Sequoia National Park, CA Structure from Motion - UAS This portion of the data release presents a high-resolution orthomosaic image of the debris flow at South Fork Campground in Sequoia National Park. The orthomosaic has a resolution of 3 centimeters per pixel and was derived from structure-from-motion (SfM) photogrammetry using aerial imagery acquired during an uncrewed aerial systems (UAS) survey on 30 April 2024. Joshua Logan
Topographic point cloud from UAS survey of the debris flow at South Fork Campground, Sequoia National Park, CA Structure from Motion - UAS This portion of the data release presents a topographic point cloud of the debris flow at South Fork Campground in Sequoia National Park. The point cloud was derived from structure-from-motion (SfM) photogrammetry using aerial imagery acquired during an uncrewed aerial systems (UAS) survey on 30 April 2024. Joshua Logan
Ground control point locations and topographic GNSS measurements collected during the UAS survey of the debris flow at South Fork Campground, Sequoia National Park, CA Trimble R10 This portion of the data release presents topographic Global Navigation Satellite System (GNSS) measurements acquired during the UAS survey of the debris flow at South Fork Campground in Sequoia National Park. Joshua Logan

Publications

Samples collected during this field activity