Towed thermistor chain observations in JASIN

Towed thermistor chain observations in JASIN by R. J. Baumann Download PDF EPUB FB2

Were taken with a towed thermistor chain during late August and early September,about km northwest of Scotland as a part of the JASIN Experiment. The chain was usually towed at a speed of 3 m/s around a km square centered at 59 N, 12°30'W. On two occasions tows were made around. Observations of temperature and pressure between 10 and 70 m depth were taken with a towed thermistor chain during late August and early.

September,about km northwest of Scotland as a part of the JASIN Experiment. The chain was usually towed at a speed of 3 m/s around a km square centered at 59°N, 12°30'W.

Observations of temperature and pressure between 10 and 70 m depth were taken with a towed thermistor chain during late August and early September,about km northwest of Scotland as a part of the JASIN Experiment.

The chain was usually towed at a speed of 3 mis around a km square centered at 59°N, 12° by: 3. Towed thermistor chain observations in JASIN. Topics: Ocean temperature -- North Atlantic Ocean, Ocean-atmosphere interaction, Thermistors. Publisher: Corvallis:. A thermistor chain was towed km through the eastern North Pacific subtropical frontal zone in January The observations resolve surface layer temperature features with horizontal.

A thermistor chain was towed km through the eastern North Pacific subtropical frontal zone in January The observations resolve surface layer temperature features with horizontal wavelengths of – km and vertical scales of 10–70 m.

Observations of temperature and pressure in the upper meters were taken with a towed thermistor chain in January north of Hawaii. The observations were taken as a part of a cooperative investigation of the North Pacific subtropical front entitled FRONTS Temperature observations were also taken during JASIN with a towed thermistor chain [Baumann et al., ].

The chain was towed at a speed of 3 m/s around a km square which contained the FIA moorings (Figure 1). The chain had thermistors installed at 2-m intervals from approximately A km tow in the upper seasonal thermocline of the Sargasso Sea with an m aperture thermistor– conductivity chain and shipborne kHz ADCP is examined to determine the relationship between patches of scalar activity and buoyancy frequency, vertical shear, and gradient Richardson number (Ri).

cussion and analysis of these observations, see Ishida (). Temperature observations using a towed thermistor chain have been obtained by Baumann et al. () in the same general area as the moorings. INSTRUMENTATION The location of the four moorings B1 through B4 is given in Appendix A.

Internal waves were observed propagating either up-slope or on-shelf, with little evidence of off-shelf propagation. The waves seen over the continental slope have been tracked between the SAR images, and towed thermistor chain records, using the assumption that the internal wave is.

Figure 3 shows the location of thermistor strings installed at eight drill holes, and each string has 6 thermistors placed at,m from the surface of cavern wall. T−l measuring point was selected to measure the effect on the temperature distribution from ambient temperature and T−2 and T−3 measuring point to.

The internal wavefield during the Joint Air-Sea Interaction (JASIN) experiment was monitored by moored current meters and moored and towed thermistor chains. The observations were concentrated in. thermistor chain [A chain that is towed astern, carrying instruments to measure seawater temperatures] Thermistorkette f.

thermistor chain [A chain that is towed astern, carrying instruments to measure seawater temperatures] Thermistorkette f Search book. Search within book. Type for suggestions. Table of contents Previous.

Page cussion and analysis of these observations, see Ishida (). Temperature observations using a towed thermistor chain have been obtained by Baumann et al.

() in the same general area as the moorings. INSTRUMENTATION The location of the four moorings Bl through B4 is given in Appendix A. The instrumented part of the chain is an array of thermistors equally spaced at m vertical intervals, providing temperature data at four samples per second with a relative accuracy of about over a vertical aperture of about m.

The chain was towed behind the U.S.N.S. Bartlett at speeds of about 2 kn ( cm s-l). Towed thermistor chain measurements are used to describe a large patch of ocean fine- and microstructure. In contrast to the relatively quiescent salt-fingering conditions of Part I, the 3-km long by 5–m high patch is in a frontal zone where background shear.

Two illustrative examples of the nature of the observed phase velocity of the internal waves are contained in Fig. 12, for the tidal cycles on the morning of 19 August when extra towed thermistor chain data were available and the afternoon of 20 August when SAR imagery supported the analysis.

Idealized planar wave fronts are shown aligned at. Results of an analysis of towed thermistor chain measurements in the western North Atlantic indicate that over a wide range of one‐dimensional wave numbers and for frequencies down to within a fraction of the inertial frequency the internal wave spectrum may be adequately represented by the Garrett and Munk (, ) model.

A km tow in the upper seasonal thermocline of the Sargasso Sea with an m aperture thermistor-conductivity chain and shipborne kHz ADCP is examined to determine the relationship between. If the address matches an existing account you will receive an email with instructions to reset your password.The internal wavefield during the Joint Air-Sea Interaction (JASIN) experiment was monitored by moored current meters and moored and towed thermistor chains.

The observations were concentrated in the upper ocean near the centre of Rockall Trough, but velocity measurements were also made near topographic features and throughout the water column. Towed thermistor chain.

The DERA thermistor chain was towed near the shelf edge at speeds typically 4 knots ( m s −1) by RV Colonel Templer. The 1 Hz thermistor chain data has been sub-sampled to once every 20 s, a frequency more manageable for analysis which still resolved the internal waves.