Skip to main content
U.S. flag

An official website of the United States government

Keep up to speed with our Falkor research cruise with this latest seafloor syntax!

Image shows a 3D rendering of an undersea mount
A 3D image processed by John Greene showing a large seamount on Tamu Massif. Image courtesy of Schmidt Ocean Institute.

From June 12 to July 3, the U.S. Geological Survey and Schmidt Ocean Institute will be conducting a research cruise off the coast of Oregon and Washington, hunting deep-sea bubbles and the creatures that eat them. While we post stories about our findings, we’ll also be posting little vignettes like these, in which we serve as your terminology tour-guides to the unusual and hard-to-pronounce words that dwell in the depths of deep-ocean science.

The WaterWord: Bathymetry


  • Just as the land above the water has its highs and lows, so too does the land beneath the ocean’s surface. Those features are known as bathymetry.


  • Bathymetric comes from two Greek words: bathys, meaning “deep,” and metrike, meaning “to measure.”

Use/Significance in the Earth Science Community:

  • Bathymetry is an important aspect of marine geology. Scientists seek to identify various types of features underwater, as well as to study how they formed.
  • Researchers use tools like multibeam sonar to map the seafloor.  By measuring how long an acoustic signal takes to bounce off the seafloor, scientists develop high-resolution maps of deep-sea features.

U.S. Geological Survey/Schmidt Ocean Institute Use:

  • USGS and SOI are collaborating on a research cruise off the coast of Oregon and Washington that will study methane seeps in a region known as the continental margin. During this cruise, quite a bit of bathymetric data will be collected.
  • SOI research cruises regularly collect bathymetric data, and its research vessel, the R/V Falkor, is equipped with advanced multibeam sonar systems to study the seafloor features.
  • USGS has also collected significant amounts of bathymetric data, not just along the ocean floor but also for river and lake bottoms. That data can be found here.

Next WaterWord: Benthic

Enjoying our cruise log and blog? Keep up with us on Facebook, Twitter or right here on the USGS website!

Get Our News

These items are in the RSS feed format (Really Simple Syndication) based on categories such as topics, locations, and more. You can install and RSS reader browser extension, software, or use a third-party service to receive immediate news updates depending on the feed that you have added. If you click the feed links below, they may look strange because they are simply XML code. An RSS reader can easily read this code and push out a notification to you when something new is posted to our site.