Dataset: microstructd08

Name: Averages of EPSONDE Microstructure Profiles from the Deep Site, R/V Seward Johnson cruise SJ9508 in the Gulf of Maine and Georges Bank in 1995 as part of the U.S. GLOBEC program (GB project)
Published: 2004-09-10
Keywords: oceans

Cite This Dataset

DOI:10.1575/1912/bco-dmo.2428.1

Spatial Extent: N:40.86 E:-67.54 S:40.86 W:-67.54

Temporal Extent: 1995-06-06 - 1995-06-16

Project:

U.S. GLOBEC Georges Bank (GB)

Program:

U.S. GLOBal ocean ECosystems dynamics (U.S. GLOBEC)

Principal Investigator:

Dave Hebert (University of Rhode Island, URI-GSO)

BCO-DMO Data Manager:

Ms Dicky Allison (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Version:

Version Date:

2004-09-10

Restricted:

Validated:

Yes

Current State:

Final no updates expected

Averages of EPSONDE Microstructure Profiles from the Deep Site, R/V Seward Johnson cruise SJ9508 in the Gulf of Maine and Georges Bank in 1995 as part of the U.S. GLOBEC program (GB project)

Abstract:

Averages of EPSONDE Microstructure Profiles from the Deep Site, R/V Seward Johnson cruise SJ9508 in the Gulf of Maine and Georges Bank in 1995 as part of the U.S. GLOBEC program.

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Archival Copy

Version Date	Archive	Persistent Identifier (PID)	Date PID Issued
2004-09-10	Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)	10.1575/1912/bco-dmo.2428.1	2019-10-30

Description

Averages of EPSONDE Microstructure Profiles

Deep Site, Seward Johnson 95-08

Typically, an EPSONDE microstructure profile is the average of 10 deployments of the EPSONDE instrument. One microstructure profile per profile number. During Seward Johnson cruise SJ9508, 20 deployments were made during each sampling event resulting in 2 microstructure profiles for each profile number.

DMO Note: This data set as submitted contained the parameter "station". In the context of our definition, station was used incorrectly. We have changed this parameter to "profile" with the definition of: consecutively numbered EPSONDE profile. Users consulting the GSO Tech. Report should equate profile number with station number.

Prepared by: Russ Burgett, University of Rhode Island, GSO
Reference: (D08 - GS2AVG)

Details of data processing are described in: U.S. GLOBEC Georges Bank microsturcture data. GSO Univ. Rhode Island Tech. report 96-6.

Contributor:
Dave Hebert
Graduate School of Oceanography 
Univ. of Rhode Island 
Narragansett, RI 02882-1197

phone: 401 874 6610
fax:   401 874 6728
e-mail:  david.hebert@gso.uri.edu  Updated:  September 10, 2004; gfh

Methods & Sampling

EPSONDE microstructure profile is the average of 10 deployments of the EPSONDE instrument. One microstructure profile per profile number. During Seward Johnson cruise SJ9508, 20 deployments were made during each sampling event resulting in 2 microstructure profiles for each profile number.

Data Processing Description

This data set as submitted contained the parameter "station". In the context of our definition, station was used incorrectly. We have changed this parameter to "profile" with the definition of: consecutively numbered averaged EPSONDE profile. Users consulting the GSO Tech. Report should equate profile number with station number.

Data Files

File
D08_rs.csv (Comma Separated Values (.csv), 256.32 KB) MD5:441f11cc5375a6891fec48b45a9476c4 Primary data file for dataset ID 2428

More Information about this dataset

Funding Sources

Funding Source	Award Number
National Science Foundation	unknown GB NSF
National Oceanic and Atmospheric Administration	unknown GB NOAA

Deployments

Deployment	Synonyms	Start Date	Platform	Investigator
SJ9508		1995-06-06	R/V Seward Johnson	Dr Neil Oakey (Chief Scientist)	data info

Instruments

EPSONDE

Supplied Description:

An EPSONDE microstructure profile is the average of 10 deployments of the EPSONDE instrument. One microstructure profile per profile number. During Seward Johnson cruise SJ9508, 20 deployments were made during each sampling event resulting in 2 microstructure profiles for each profile number.

Instrument Type

Generic Name: EPSONDE

Generic Description:

An EPSONDE is a tethered free-fall profiling system used to obtain temperature microstructure and velocity turbulence data in the water column. The EPSONDE profiler carries a variety of slow and fast sensors for measuring temperature microstructure, velocity microstructure, conductivity and depth. These data yield turbulent kinetic energy dissipation rates and temperature variance dissipation rates as well as derived quantities such as turbulent diffusivity.

Parameters

Date and time formats are described in python strftime() syntax.

Supplied Name	Supplied description	Supplied Units	Standard Name
cruiseid	cruise identification		cruiseid
lat	latitude, negative = South	decimal degrees	lat
lon	longitude, negative = West	decimal degrees	lon
profile	consecutively numbered EPSONDE profile		no_bcodmo_term
yrday_gmt	year day, Julian calender	decimal day, GMT	yrday_gmt
press	depth of sample, reported as pressure	decibars	press
temp	temperature	degrees C	temp
sal	salinity	PSU	sal
sigma_t	density	kilograms/meter<sup>3</sup>	sigma_t
eps	epsilon, turbulent kinetic energy dissipation	watts/kilogram	eps
chi_t	chi_theta, temperature variance dissipation	degrees C<sup>2</sup>/second	chi_t
k_t	K_t, vertical diffusivity for heat	meters<sup>2</sup>/second	k_t
k_rho	K_rho, vertical diffusivity for density	meters <sup>2</sup>/second	k_rho