Scripps Institution of Oceanography, UC San Diego, scientists are currently in Antarctica to collect data on the continent's largest ice shelf. Ice shelves prevent land ice from reaching the ocean. When these barriers fall apart, sea levels rise. Three San Diego researchers are installing an array of seismic sensors that will gauge stress on the critical Ross Ice Shelf. "There's about three meters of sea level rise that it's restraining," said Peter Bromirski, reached in Antarctica via Skype. "And of course, for California — with all our coastal regions — sea level rise is a significant concern."