Daily Archives: September 6, 2017

Installing underway instruments on the R/V Ride

After the Ride deploys all of the moorings at the beginning of the trip, the scientists and engineers will switch into “survey mode” along with the rest of the research vessels big and small and aircraft. During survey mode, all of the underway instruments will be used, including an over-the-side mounted Acoustic Doppler Current Profiler (ADCP). This instrument is attached to a unwieldy pole that is fastened to the deck of the ship. The ADCP is then attached to the bottom of the pole so that while the ship is surveying, the near-surface velocities can be measured. This is combined with the deeper velocities that are being measured by the ship. Sometimes this installation can be less than precise (see video)!

 

Development engineers Paul Chua and Spencer Kawamoto and postdoctoral researcher Sean Haney fasten the pole to the deck of the Ride. Photo & video: Suanda

As on the R/V Oceanus, the R/V Ride has been outfitted with an infrared camera and radiometer courtesy of Chris Chickadel from the University of Washington. Assistant Professor Nirnimesh Kumar has been tasked with setting up and keeping the IR camera & radiometer up and running during the R/V Ride’s survey mode. These instruments will be getting snapshots of temperature from the bow of the ship as the ship steams over temperature fronts in the inner shelf.

Assistant professor Nirni Kumar (L) and development engineer Eric Lo (R) from Qualcomm Institute UC San Diego stand beside the IR camera and radiometer equipment on the bow of the R/V Ride. Photo: MacKinnon

Infrared camera pointed towards the waterline from the bow of the R/V Ride. Photo: MacKinnon

First SAR Images Available at CSTARS

A web page showing all satellite SAR images obtained and processed so far, as downloadable GeoTIFFs and as browse images for basic orientation (Google Earth screen shots), went online today at CSTARS:

The URL of the page is https://www.cstars.miami.edu/cstars-projects/inner-shelf.

So far there are two COSMO-SkyMed images acquired on Sep 05, 02:22 UTC (Sep 04, 19:22 PDT) and Sep 05, 13:14 UTC (06:14 PDT). We will add more as we receive them.

Readying gear on the R/V Sally Ride

R/V Sally Ride ready for loading at the SIO Marine Facility in San Diego for the inner shelf experiment. Photo: MacKinnon

Postdoctoral researcher Ata Suanda gives a thumbs up after testing the “Bow Commander” winch used to deploy the bow chain Photo: MacKinnon

While the Oceanus is making its way to the inner shelf study area, the science party of the R/V Sally Ride have been furiously loading and readying gear in San Diego for departure on Thursday. The sun has hiding behind fairly thick clouds for the last two days which has certainly made it easier for loading and everyone is very excited about departure!

Readying the ship means loading all of the gear required for 42 moorings which have been programmed to sample the water column from 20m to 50m depths measuring velocity, density and turbulent mixing. In addition to deploying moorings, the 18 members of the science party on the Ride are setting up underway equipment including an ADCP (acoustic doppler current profiler, capable of measuring velocity at the very near surface) on an over-the-side pole, a bow chain (string of instruments that hangs off of the bow of the ship away from any contamination due to the ship wake) and an underway profiler at the stern of the ship capable of measuring turbulent mixing as well as density in the water column. Additionally, the science party is installing an instrument to visualize the internal wave features below the surface using a Biosonics transducer mounted in the middle of the ship, and the WAMOS wave radar system is being set up to quantify surface wave properties. As with the Oceanus, researchers from UW have sent an infrared camera which will be mounted on the bow of the ship to observe near-surface temperature fronts.

While the Ride is deploying 42 moorings, they will be added to 36 moorings deployed by the Feddersen group from SIO, 41 moorings deployed by the MacMahan group from NPS, 19 moorings deployed by the Barth / Lerczak group and 13 buoys deployed by Janssen leading to an amazing 150 moorings! All of the moorings will stay out until the beginning of November.

scripps oceanography uc san diego