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Jim Carlson

Senior Principal Engineer

Email

carlson@apl.washington.edu

Phone

206-543-2796

Department Affiliation

Ocean Physics

Education

A.B. Physics, University of California, Berkeley, 1973

Publications

2000-present and while at APL-UW

Autonomous velocity and density profiler: EM-APEX

Sanford, T.B., J.H. Dunlap, J.A. Carlson, D.C. Webb, and J.B. Girton, "Autonomous velocity and density profiler: EM-APEX," Proceedings, IEEE/OES Eighth Working Conference on Current Measurement Technology, 152-156, doi:10.1109/CCM.2005.1506361, (IEEE, 2005)

More Info

30 Jul 2005

We developed an autonomous ocean profiling velocity and density float that provides exceptional vertical coverage and temporal resolution to depths of 2000 m for deployments of many years. Electrodes were added to the exterior of standard WRC APEX floats, and electronics were added inside. The electrode voltages result from the motion of seawater and the instrument through the Earth's magnetic field. Other systems included magnetic compass, tilt, CTD, GPS, and Iridium (providing sampling/mission changes). Three EM-APEX floats were deployed from a C-130 aircraft ahead of Hurricane Frances. The floats profiled for 10 hr from the surface to 200 m, then continued profiling between 30 m and 200 m with excursions to 500 m every half inertial period. The velocity computations were performed onboard and saved for later transmission. After five days, the floats surfaced and transmitted the accumulated processed observations, then the floats profiled from 500 m every half inertial period until recovered early in October located by GPS and Iridium.

Inventions

Remote Sensing of Salinity Profiles in a Marine Estuary

Record of Invention Number: 47312

Tom Sanford, Jim Carlson, John Dunlap

Disclosure

22 Apr 2015

Acoustics Air-Sea Interaction & Remote Sensing Center for Environmental & Information Systems Center for Industrial & Medical Ultrasound Electronic & Photonic Systems Ocean Engineering Ocean Physics Polar Science Center
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