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SUMMARY:Through the Ocean to the Mantle: Under the Seas with a Fleet of Fl
 oating Seismic Robots - Frederik Simons - University Princeton
DTSTART:20200122T160000Z
DTEND:20200122T170000Z
UID:TALK137401@talks.cam.ac.uk
CONTACT:Jenny Jenkins
DESCRIPTION:In the last few decades\, seismologists have mapped the Earth'
 s interior (crust\, mantle\, and core) in ever increasing detail. Natural 
 earthquakes\, the sources of energy used to probe the Earth's inside via s
 eismic computerized tomography\, occur mostly on tectonic plate boundaries
 . Seismometers\, the receivers of earthquake wave motion\, are located mos
 tly on dry land. Such fundamentally inadequate 'source-receiver' coverage 
 leaves large volumes inside the Earth entirely unexplored. Here be dragons
 ! Placing seismic stations on the ocean bottom is among the solutions prac
 ticed successfully today. But there are exciting alternatives. Enter MERMA
 ID: a fully autonomous marine instrument that travels deep below the ocean
  surface\, recording seismic activity (and marine environmental data)\, an
 d then reporting it by surfacing for satellite data transmission. This pre
 sentation will discuss a century of Earth imaging\, a decade of instrument
  design and development\, and the challenging – and wet – places that 
 our scientific journey has taken us.
LOCATION:Marine/Wolfson Building lecture hall\, Bullard Labs.
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