Scientific Reports
Scientific Reports
>Received: by revelle.UCSD.EDU (SMI-8.6/UCSDUUCPGENERIC.4)
id FAA14466 to ; Thu, 21 Sep 2000 05:30:53 GMT
Date: Thu, 21 Sep 2000 05:30:53 GMT
From: revelle!jacobson@sdsioa.ucsd.edu (Dan Jacobson)
To: shipsked@sio.UCSD.EDU
Subject: NECR03 week3 science report
Cc: drudnik@sio.UCSD.EDU, jacobson@sio.UCSD.EDU, master@sio.UCSD.EDU,
scg@sdsioa.ucsd.edu
Below is the third NECR03RR science report from Dr. Rudnick.
Dan
>From drudnick@revelle Thu Sep 21 04:50 GMT 2000
From: Dan Rudnick - NECR03 <drudnick@revelle>
Subject: week 3 report
We have just finished the third week of the HOME SeaSoar/Doppler sonar
survey. The beginning of the week saw the completion of our survey of
the Kauai Channel. Internal waves of 100 m amplitude were common,
especially on the south side of the ridge. Energetic activity
extended to at least 60 km away from the ridge. A section starting in
the central Kauai Channel and extending across the ridge was repeated
five times during the spring tide; these data will allow some insight
into temporal variability. Shear variances on a roughly 10-m scale
were quite large, with the ratio of shear-squared to buoyancy
frequency-squared equal to 0.3-0.5. For comparison, shear variances
were a about factor of five smaller in the open Pacific halfway
between here and the west coast of the US. We are now surveying
northwestard along the ridge in a broad zig-zag pattern. We plan to
recover SeaSoar on Friday to begin recovering the microstructure
floats (LAMPs) deployed earlier.
>Received: by revelle.UCSD.EDU (SMI-8.6/UCSDUUCPGENERIC.4)
id GAA03033 to ; Thu, 14 Sep 2000 06:05:38 GMT
Date: Thu, 14 Sep 2000 06:05:38 GMT
From: revelle!jacobson@sdsioa.ucsd.edu (Dan Jacobson)
To: shipsked@ucsd.edu
Subject: NECRO03 science report #2
Cc: drudnick@sdsioa.ucsd.edu, jacobson@sdsioa.ucsd.edu, scg@sdsioa.ucsd.edu
>From drudnick@revelle Thu Sep 14 05:08 GMT 2000
Date: Thu, 14 Sep 2000 05:08:17 +0000 (GMT)
From: Dan Rudnick - NECR03 <drudnick@revelle>
Subject: week 2 report
The second week of the HOME SeaSoar/Doppler sonar survey began with a
southward leg along the Hawaiian Ridge between French Frigate Shoals
and the Kauai Channel. Along the way, we deployed five microstructure
profiling floats (LAMP, Lagrangian Microstructure Profiler) for Jeff
Sherman. The floats profile from the surface to nearly 400 m,
completing the cycle in two hours. All five LAMPs are currently
reporting via ARGOS. The LAMPs will be recovered during the last week
of the cruise. We are now in the midst of a survey of the Kauai
Channel. The survey consists of five across-ridge legs extending 96
miles on either side of the ridge. It is now spring tide, and we have
observed large, presumably tidally generated, internal waves
predominantly on the southwest side of the ridge. The internal waves
are evident in both isopycnal displacement and velocity shear. The
first HOME ping-pong championship concluded today (9/13/00) with Rey
Esteban capturing the coveted first prize.
This cruise is being funded by a grant from the National Science Foundation.
Email:
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