An article just published in Oceanography by PMEL’s Dr. Robert Embley and collaborators at Japan's JAMSTEC, Oregon State University (CIMRS), Washington University, and the University of Texas, Dallas describes the site of a 2010 submarine eruption of a 200 meter deep seamount in the Mariana arc that was powerful enough to produce an atmospheric plume. Comparisons of pre- (2002) and post- (2013) eruption bathymetric surveys reveal a new 400m diameter crater. This new map targeted dives with a JAMSTEC remotely operated vehicle in 2013. This new information will help evaluate the hazard potential of submarine eruptions.
For more information please visit the PMEL Earth-Ocean Interactions website.
PMEL in the News
At the start of 2014 meteorologists warned of a possible El Nino event this year. The portents were persuasive – a warming of the central Pacific much like that which preceded the powerful El Nino event of 1997.
Arctic warming is happening at twice the average level of global warming in a process called arctic amplification, where more warming occurs as ice is lost because less of the sun’s energy is reflected back into space.
Many marine species have a larval phase. In this phase, larvae drifts with the prevailing ocean currents before settling in nursery locations. In such cases, the spawning locations can be represented as sources and the settling locations of the juvenile or adult stages as sinks. Population connectivity and directionality of flow between sources and sinks can have important implications for management and conservation. The reconstruction of source-sink dynamics is often hampered by limited... more