Re: underwater noise experiment

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Article #7879

#7879

From: rovero
Date: Thu, 24 Mar 1994 15:56

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In <Cn5As3.4qK@unocal.com>, stgprao@st.unocal.COM (Richard Ottolini) writes:
>A feasability study was done several years ago and it works.
>The experiment has to be repeated now and then (but every four hours???)
>to measure temperature changes over time.

There are good reasons for repeating the observation several times
per day.  If you sample at too low a frequency, higher frequency
variability from sources such as tides will "contaminate" the
record of time arrivals.  For most oceanographic observations of
any consequence it is necessary to sample at less than half the
known intertial and tidal periods in the observation area.

P.J. Rovero                   Internet: rovero@oc.nps.navy.mil
Code OC/Rv                    Packet:   kk1d@k6ly
Naval Postgraduate School
Monterey, CA 93943

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From: rovero@oc.nps.navy.mil
Newsgroups: ca.environment,talk.environment,sci.environment,sci.bio
Subject: Re: underwater noise experiment
Message-ID: <Cn6Ext.My1@taurus.cs.nps.navy.mil>
Date: 24 Mar 94 15:56:17 GMT
References: <2mnrda$b12@galaxy.ucr.edu> <egeisler.764383985@qualcom> <1994Mar23.154302.13592@pbhye.PacBell.COM> <2mqh8d$adm@gap.cco.caltech.edu> <Cn5As3.4qK@unocal.com>
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