Citation:

PANGAEA.815863

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Related to:

Verch, Norbert; Quadfasel, Detlef (1985): Hydrographic observations in the Norwegian Trench during 23. March - 17. April 1983 VALDIVIA cruise 10. Technical Report, Institut für Meereskunde der Universität Hamburg, 2-85, 139 pp, https://doi.org/10.2312/zmk-1985_2

Coverage:

Median Latitude: 58.270023 * Median Longitude: 5.249286 * South-bound Latitude: 57.366667 * West-bound Longitude: 2.733333 * North-bound Latitude: 59.833333 * East-bound Longitude: 7.500000

Date/Time Start: 1983-03-23T18:45:00 * Date/Time End: 1983-04-17T23:53:00

Minimum DEPTH, water: 0.00 m * Maximum DEPTH, water: 460.04 m

Event(s):

VA10_23 (23) * Latitude: 57.816667 * Longitude: 5.225000 * Date/Time: 1983-03-23T18:45:00 * Elevation: -115.0 m * Location: North Sea * Campaign: (Norwegische Rinne) * Basis: Valdivia (1961) * Method/Device: Multiple investigations (MULT) * Comment: SST, O, N, S, C

VA10_24 (24) * Latitude: 57.900000 * Longitude: 5.320000 * Date/Time: 1983-03-23T21:08:00 * Elevation: -140.0 m * Location: North Sea * Campaign: (Norwegische Rinne) * Basis: Valdivia (1961) * Method/Device: Multiple investigations (MULT) * Comment: SST, O, C

VA10_25 (25) * Latitude: 57.988333 * Longitude: 5.416667 * Date/Time: 1983-03-23T22:25:00 * Elevation: -230.0 m * Location: North Sea * Campaign: (Norwegische Rinne) * Basis: Valdivia (1961) * Method/Device: Multiple investigations (MULT) * Comment: SST, O, N, S, C

Comment:

Altogether 290 vertical profiles of temperature and salinity were taken, employing a ME-Multisonde CTD supplemented by a 6 bottle rosette sampler. The CTD provided data with a resolution of 1.5 m deg, 0.2 dbar and 0.002 mS/cm at a rate of 0.5 Hz which were recorded on a Kontron Psi 80 computer and stored on digital floppy disks. Only data from the lowering profiles, run at a speed of 0.7 m/s, were processed. On recovery the instrument was stopped at several depth levels to operate the rosette sampler, thereby providing calibration data for salinity. Due to electronical and mechanical problems with the sampler only about 40 water samples were taken. In addition surface data of temperature and salinity were obtained from bucket samples. Salinities of the samples were analysed on board by use of a Beckmann salinometer.

The few in-situ calibration data confirmed the calibration of the CTD carried out before the cruise in the laboratory. The data can therefore be regarded as being accurate to within dT = ±0.02°C for temperature, dS = ±0.01 per mil for salinity and dP = 3 dbar for pressure.

After editing obviously erroneous data through linear interpolation between neighbouring values the vertical profiles were averaged within intervals of 5 dbar, centered at 0, 5, 10, 15 dbar etc.

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Event label	Event
2	Date/Time of event	Date/Time
3	Latitude of event	Latitude
4	Longitude of event	Longitude
5	Elevation of event	Elevation	m
6	DEPTH, water	Depth water	m			Geocode
7	Pressure, water	Press	dbar	Quadfasel, Detlef	CTD
8	Temperature, water	Temp	°C	Quadfasel, Detlef	CTD
9	Salinity	Sal		Quadfasel, Detlef	CTD	PPT
10	Temperature, water, potential	Tpot	°C	Quadfasel, Detlef	Calculated
11	Density, sigma-theta (0)	Sigma-theta	kg/m³	Quadfasel, Detlef	Calculated
12	Dynamic height	dyn height	dyn m	Quadfasel, Detlef	Calculated	Calculated from depth, temperature, and salinity
13	Brunt-Väisälä frequency	N	rad/s	Quadfasel, Detlef	Calculated

License:

Creative Commons Attribution 3.0 Unported (CC-BY-3.0)

Size:

23116 data points

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