PMEL staff at the NOAA Cooperative Institute for Marine Research Studies at Oregon State University recently participated on a hydrophone deployment cruise aboard the Spanish R/V Sarmiento de Gamboa in the Bransfield Strait off the western Antarctic Peninsula along with colleagues from the University of Washington, Woods Hole Oceanographic Institute, Queens College and the University of Granada (Spain) from January 4 - 17. PMEL successfully deployed 6 hydrophone moorings, while the University of Washington, Woods Hole and Queens College deployed 30 ocean bottom seismometers, and the University Granada deployed 20 land-based seismic stations.
The Bransfield Strait region is a highly volcanic area, with multiple, recently active, submarine and subaerial volcanoes including the active Deception Island volcano which last erupted in 1970 damaging the Spanish Antarctic base located there. Thus the goal of the project is to assess the volcanic hazard to the collection of international polar bases located in this part of Antarctica, as well as to better understand the ocean soundscape and sea-ice dynamics in the region. Using both active and passive seismo-acoustic data collection techniques, researchers will be able to image shallow pockets of magma in the crust that are likely distributed throughout the entire area. This research is funded by the National Science Foundation Antarctica Program.
Learn more about PMEL's Acoustic Program here: https://www.pmel.noaa.gov/acoustics/