Dataset: Cruise Track
Deployment: B4-2008

cruise track data from ship's underway data acquisition system

Co-Principal Investigator:

Craig M. Lee (University of Washington, UW APL)

BCO-DMO Data Manager:

Theresa McKee (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Project:

North Atlantic Bloom Experiment 2008 (NAB 2008)

Current State:

Final no updates expected

Version:

07 January 2011

Deployment Synonyms:

B2008_04

Coordinated Deployments:

B9-2008, B10-2008, KN193-03, Biofloat_48, SG140, SG141, SG142, SG143

Version Date:

2011-01-07

Data URL:

https://www.bco-dmo.org/dataset-deployment/453462/data

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Description

Cruise Tracks (time and position) recorded by Global Positioning System.

Methods & Sampling

Dataset acquisition description

Deployment-specific acquisition description

The cruise track dataset for cruise B4-2008 was extracted from .ascii files generated by National Instruments LabView program; created for the purpose of recording and merging outputs from different components of the underway system aboard R/V Bjarni Saemundsson.

Data Processing Description

Dataset Processing Description

Deployment-specific processing description

Date and time computed from Julian year day (day 1 = January 1, 0000.)

More information about this dataset deployment

Funding

Award Number	Funding Source
OCE-0628379	NSF Division of Ocean Sciences

Instruments

Echo sounder - single-beam

Supplied Description:

Knudsen Engineering Model 320BR
sub-bottom profiler, echosounder
operating at 12 kHz

Instrument Type

Generic Name: Echo sounder - single-beam

Acronym: Echo Sounder SB

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/156/

Generic Description:

A single-beam echo sounder is an instrument that measures water depth at a single point below the platform by timing pulses of sound reflected on the seafloor. The echo sounder transmits and receives sound, accurately measuring the time it takes to leave the sounder, reach the bottom and return to the sounder. It then converts this information into digital or graphic representations of the bottom depth and relief.
The average echo sounder consists of a transmission and reception unit that sends sound signals through the water, receives and decodes information and converts that information into either a graphic or visual form. Attached to the receiver is a transducer that acts as a microphone and a speaker under the water. Sound waves travel at approximately 1500 m/s through the water dependent on water temperature". more from LMS Technologies

Global Positioning System Receiver

Supplied Description:

C-Nav Real Time Gypsy (RTG) GPS
Northstar 941XD GPS with differential capability
Trimble Tasman P(Y) P-Code GPS
(2) Furuno GP-90D WAAS/dGPS
Furuno GP1850-WD WAAS/dGPS

Instrument Type

Generic Name: Global Positioning System Receiver

Acronym: GPS

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/POS03/

Generic Description:

The Global Positioning System (GPS) is a U.S. space-based radionavigation system that provides reliable positioning, navigation, and timing services to civilian users on a continuous worldwide basis. The U.S. Air Force develops, maintains, and operates the space and control segments of the NAVSTAR GPS transmitter system. Ships use a variety of receivers (e.g. Trimble and Ashtech) to interpret the GPS signal and determine accurate latitude and longitude.

Parameters

Supplied Name	Supplied description	Supplied Units	Standard Name
Cruise_ID	Cruise_ID	dimensionless	cruise_id
date	date (UTC) as YYYYMMDD	dimensionless	date
time	time (UTC) as HHMM	dimensionless	time
latitude	latitude (positive is North)	decimal degrees	lat
longitude	longitude (negative is West)	decimal degrees	lon
seafloor	depth of water as reported by ship's 12 KHz Knudsen echosounder	meters	depth_w
julian_day_yr0	year day	dimensionless	julian_day_yr0

Database

Contribute Data

Dataset: Cruise Track
Deployment: B4-2008

Dataset acquisition description

Deployment-specific acquisition description

Dataset Processing Description

Deployment-specific processing description

Database

Contribute Data

Dataset: Cruise TrackDeployment: B4-2008

Dataset acquisition description

Deployment-specific acquisition description

Dataset Processing Description

Deployment-specific processing description

Dataset: Cruise Track
Deployment: B4-2008