Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Skip to content

Aerial images from a UAS survey of the debris flow at South Fork Campground, Sequoia National Park, CA

Metadata Updated: December 25, 2024

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. The imagery was acquired with a Ricoh GR II digital camera featuring a global shutter. The camera was mounted to the UAS using a fixed mount, in an approximately nadir orientation. The camera was set to acquire images at 1 hertz, using an external intervalometer. The UAS was flown on pre-programmed autonomous flight lines spaced to provide approximately 70 percent overlap between images from adjacent lines, from an approximate altitude of 110 meters above ground level (AGL), resulting in a nominal ground-sample-distance (GSD) of 2.9 centimeters per pixel. The images were geotagged using positions from the UAS onboard single-frequency autonomous GPS. The original images were acquired in Adobe DNG format but have been converted to JPG format to reduce their size and to facilitate distribution. During the conversion, adjustments were made to the exposure value (EV), to improve image brightness. Only the images which were used for the creation of the topographic data products (also presented in this data release) have been included. Images of the takeoff and landing sequence, as well as images from outside the area of interest have been omitted.

Access & Use Information

Public: This dataset is intended for public access and use. License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

Downloads & Resources

Dates

Metadata Created Date December 25, 2024
Metadata Updated Date December 25, 2024

Metadata Source

Harvested from DOI EDI

Additional Metadata

Resource Type Dataset
Metadata Created Date December 25, 2024
Metadata Updated Date December 25, 2024
Publisher U.S. Geological Survey
Maintainer
@Id http://datainventory.doi.gov/id/dataset/9b2a90459aeed745c56f5cb04940c75f
Identifier USGS:67353631d34e6fbce7b5d58f
Data Last Modified 20241219
Category geospatial
Public Access Level public
Bureau Code 010:12
Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
Metadata Catalog ID https://datainventory.doi.gov/data.json
Schema Version https://project-open-data.cio.gov/v1.1/schema
Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
Harvest Object Id 660c43d4-804f-4600-9842-164826321279
Harvest Source Id 52bfcc16-6e15-478f-809a-b1bc76f1aeda
Harvest Source Title DOI EDI
Metadata Type geospatial
Old Spatial -118.76724,36.33801,-118.75407,36.35335
Publisher Hierarchy White House > U.S. Department of the Interior > U.S. Geological Survey
Source Datajson Identifier True
Source Hash 44ade9d47ed03946291148893a31e640c9021be7b89557e4c54a780dba69f224
Source Schema Version 1.1
Spatial {"type": "Polygon", "coordinates": -118.76724, 36.33801, -118.76724, 36.35335, -118.75407, 36.35335, -118.75407, 36.33801, -118.76724, 36.33801}

Didn't find what you're looking for? Suggest a dataset here.