Cooperative Institute for Research in Environmental Sciences at the University of Colorado Boulder

Alaska Amphibious Community Seismic Experiment

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The Alaska Amphibious Community Seismic Experiment (AACSE) is an
offshore-onshore passive source seismic experiment designed to
investigate the processes that govern subduction, earthquakes,
and volcanism along the Alaska Peninsula.

In summer 2018 we deployed 75 Ocean Bottom Seismometers (OBSs) from OBSIP and 30 onshore broadband instruments from the PASSCAL Instrument Pool, shown on the map to the left. Thirty of the OBSs were provided by Woods Hole Oceanographic Instition and the remainder by Lamont Doherty Earth Observatory. OBS deployments took place on the R/V
Sikuliaq.

The experiment is concurrent with the EarthScope USArray
Transportable Array (TA) and maximizes integrated use of TA
instruments, focusing on the eastern part of the subduction
system. The TA should remain fully deployed until some time in mid-late 2019.

A dense transect crossing Kodiak and Katmai integrates with TA stations 1000 km behind the arc. AVO is enhancing several Katmai
and Alaska Peninsula stations to broadband in coordination with AACSE.aa

More information can be found on the AACSE web site.