File:A bathymetric contour map of Castle Lake, Mount St. Helens.jpg
![File:A bathymetric contour map of Castle Lake, Mount St. Helens.jpg](https://upload.wikimedia.org/wikipedia/commons/thumb/c/cd/A_bathymetric_contour_map_of_Castle_Lake%2C_Mount_St._Helens.jpg/800px-A_bathymetric_contour_map_of_Castle_Lake%2C_Mount_St._Helens.jpg?20190615081012)
Size of this preview: 800 × 598 pixels. Other resolutions: 320 × 239 pixels | 640 × 478 pixels | 1,024 × 765 pixels | 1,280 × 957 pixels | 1,373 × 1,026 pixels.
Original file (1,373 × 1,026 pixels, file size: 498 KB, MIME type: image/jpeg)
File information
Structured data
Captions
Captions
Add a one-line explanation of what this file represents
Summary
editDescriptionA bathymetric contour map of Castle Lake, Mount St. Helens.jpg |
English: Researchers map the bottom of Castle Lake, near Mount St. Helens. For three days, researchers ran a small boat over the lake surface equipped with an acoustic Doppler current profiler (ADCP). The ADCP bounces an acoustic wave off the bottom that is reflected back to a mobile receiver in the boat. The frequencies of the send-receive pairs are used to calculate depth. More than 191,000 water-depth measurements were integrated with high-precision GPS and airborne lidar data. A GIS was then used to compute lake area and capacity for any given surface elevation and to generate a bathymetric map. |
Date | |
Source | https://www.usgs.gov/media/images/a-bathymetric-contour-map-castle-lake-mount-st-helens |
Author | Mosbrucker, Adam |
Licensing
editPublic domainPublic domainfalsefalse |
![]() |
This image is in the public domain in the United States because it only contains materials that originally came from the United States Geological Survey, an agency of the United States Department of the Interior. For more information, see the official USGS copyright policy.
Bahasa Indonesia ∙ català ∙ čeština ∙ Deutsch ∙ eesti ∙ English ∙ español ∙ français ∙ galego ∙ italiano ∙ Nederlands ∙ português ∙ polski ∙ sicilianu ∙ suomi ∙ Tiếng Việt ∙ Türkçe ∙ български ∙ македонски ∙ русский ∙ മലയാളം ∙ 한국어 ∙ 日本語 ∙ 中文 ∙ 中文(简体) ∙ 中文(繁體) ∙ العربية ∙ فارسی ∙ +/− |
![]() |
File history
Click on a date/time to view the file as it appeared at that time.
Date/Time | Thumbnail | Dimensions | User | Comment | |
---|---|---|---|---|---|
current | 08:10, 15 June 2019 | ![]() | 1,373 × 1,026 (498 KB) | Simon04 (talk | contribs) | User created page with UploadWizard |
You cannot overwrite this file.
File usage on Commons
There are no pages that use this file.