Cruise Report - R/V Endeavor (Oct 4-8, 2005). Test of ARL-Penn State/APL-UW Towed CTD Chain

Abstract

This report describes a test to evaluate performance of a towed CTD chain manufactured by ADM Elektronik (Germany) and owned jointly by ARL/Penn State and APL/University of Washington. The test was conducted in the vicinity of 71.2 E, 40.2 N on the continental shelf of the US, in preparation for the SW06 experiment, which calls for the chain to be towed repeatedly through nonlinear internal wave (NLIW) packets. As configured for this test, the towed CTD chain employed 48 conductivity, temperature and depth (CTD) fins spaced 3m apart on a 150m long cable terminated at the bottom by a V-fin depressor. The test successfully determined 2 kts to 10 kts towing speeds and ship turning rates that are viable operationally and scientifically. A problem was encountered with towing a shortened scope at speeds greater than 4 kts. In general, the checkout test produced results that demonstrate the wealth of information available from the towed CTD chain.

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Document Details

Document Type
Technical Report
Publication Date
Dec 31, 2005
Accession Number
ADA457202

Entities

People

  • Dajun Tang
  • Frank Henyey
  • Kevin L. Williams
  • Kyle W Becker
  • Ren-Chieh Lien

Organizations

  • Pennsylvania State University

Tags

Communities of Interest

  • Sensors

DTIC Thesaurus Topics

  • Acoustic Propagation
  • Acquisition
  • Calibration
  • Conductivity
  • Data Acquisition
  • Deep Water
  • Frequency
  • Internal Waves
  • Lessons Learned
  • Physics Laboratories
  • Repetition Rate
  • Shallow Water
  • Temperature Inversion
  • Universities
  • Water
  • Wave Packets
  • Waves

Readers

  • Coastal Oceanography
  • Marine Hydrodynamics
  • Systems Analysis and Design

Technology Areas

  • Space