Roether, Wolfgang; Weiss, W (1978): Tritium concentrations of hydrography in the North Atlantic around 40°N [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.604015, Supplement to: Roether, W; Weiss, W (1978): A transatlantic tritium section near 40°N, 1971. Meteor Forschungsergebnisse, Deutsche Forschungsgemeinschaft, Reihe A Allgemeines, Physik und Chemie des Meeres, Gebrüder Bornträger, Berlin, Stuttgart, A20, 101-108
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Abstract:
We report, numerically and in graphical form, meaured tritium concentrations from five hydrographic stations in the North Atlantic. Fairly homogeneous concentrations are observed in a surface layer typically 400 m deep. In the thermocline, concentrations decrease steadily down to the sigma-theta = 27.3 density horizon, and are more variable further down. The tritium in the lower part of the thermocline originates from the Subarctic Intermediate Water and the Mediterranean Water. There is a relative tritium maximum associated with the Mediterranean Water on the easternmost station of the section. In the deep water (sigma-theta > 27.8), concentrations east of the Midatlantic Ridge are close to the limit of detection down to 2500m, and undetectable further down, while west of the ridge tritium is found throughout the water column. The deep water tritium is associated with the deep-water advective cores of Arctic origin. The present tritium data can serve as northern boundary values in attempts to use tritium in studies of the North Atlantic main thermocline dynamics. The present data together with data from the literature point to a general division of the North Atlantic main thermocline into two layers separated by an isopycnal surface near sigma-theta = 27.3.
Coverage:
Median Latitude: 41.246667 * Median Longitude: -26.713333 * South-bound Latitude: 38.483333 * West-bound Longitude: -42.933333 * North-bound Latitude: 43.816667 * East-bound Longitude: -11.483333
Date/Time Start: 1971-06-09T00:00:00 * Date/Time End: 1971-06-17T00:00:00
Event(s):
M23_211 * Latitude: 38.483333 * Longitude: -11.483333 * Date/Time: 1971-06-09T00:00:00 * Elevation: -4912.0 m * Location: Golf of Cadiz * Campaign: M23 (Nordost-Atlantik-Expedition 1971) * Basis: Meteor (1964) * Method/Device: Water sample (WS)
M23_212 * Latitude: 39.933333 * Longitude: -18.783333 * Date/Time: 1971-06-11T00:00:00 * Elevation: -4912.0 m * Location: Golf of Cadiz * Campaign: M23 (Nordost-Atlantik-Expedition 1971) * Basis: Meteor (1964) * Method/Device: Water sample (WS)
M23_213 * Latitude: 41.200000 * Longitude: -25.983333 * Date/Time: 1971-06-13T00:00:00 * Elevation: -3201.0 m * Location: Golf of Cadiz * Campaign: M23 (Nordost-Atlantik-Expedition 1971) * Basis: Meteor (1964) * Method/Device: Water sample (WS)
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
5 datasets
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Datasets listed in this publication series
- Roether, W; Weiss, W (1978): Tritium concentrations and physical oceanography at station M23_211 in the North Atlantic (Table 1). https://doi.org/10.1594/PANGAEA.602199
- Roether, W; Weiss, W (1978): Tritium concentrations and physical oceanography at station M23_212 in the North Atlantic (Table 1). https://doi.org/10.1594/PANGAEA.602200
- Roether, W; Weiss, W (1978): Tritium concentrations and physical oceanography at station M23_213 in the North Atlantic (Table 1). https://doi.org/10.1594/PANGAEA.602201
- Roether, W; Weiss, W (1978): Tritium concentrations and physical oceanography at station M23_214 in the North Atlantic (Table 1). https://doi.org/10.1594/PANGAEA.602202
- Roether, W; Weiss, W (1978): Tritium concentrations and physical oceanography at station M23_215 in the North Atlantic (Table 1). https://doi.org/10.1594/PANGAEA.602203