Gar'kusha, D N; Fedorov, YuA; Khromov, M I (2010): Methane in waters and bottom sediments of the North (Severnaya) Dvina mouth area in 2004-2006 [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.763838, Supplement to: Gar'kusha, DN et al. (2010): Methane in the water and bottom sediments of the mouth area of the Severnaya Dvina River (White Sea). Translated from Okeanologiya, 2010, 50(4), 534-547, Oceanology, 50(4), 498-512, https://doi.org/10.1134/S0001437010040065
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Abstract:
The mouth area of the North (Severnaya) Dvina River is characterized by a high concentrations of methane in water (from 1.0 to 165.4 µl/l) and bottom sediments (from 14 to 65000 µl/kg), being quite comparable to productive mouth areas of rivers from the temperate zone. Maximum methane concentrations in water and sediments were registered in the delta in segments of channels and branches with low rates of tidal and runoff currents, where domestic and industrial wastewaters are supplied. In the riverine and marine water mixing zone with its upper boundary, locating far into the delta and moving depending on a phase of the tidal cycle, decrease of methane concentration with salinity increase was observed. The prevailing role in formation of the methane concentration level in water of the mouth area pertains to bottom sediments, which is indicated by close correlation between gas concentrations in these two media. Existence of periodicity in variations of methane concentration in river water downstream caused by tidal effects was found.
Project(s):
Archive of Ocean Data (ARCOD)
Coverage:
Median Latitude: 57.100178 * Median Longitude: 40.473044 * South-bound Latitude: -12.000000 * West-bound Longitude: 39.782778 * North-bound Latitude: 64.855000 * East-bound Longitude: 41.916200
Date/Time Start: 2004-08-16T00:00:00 * Date/Time End: 2006-08-15T00:00:00
Event(s):
Aisberg-2-2004-1 * Latitude Start: 64.855000 * Longitude: 40.250000 * Date/Time Start: 2004-08-18T00:00:00 * Date/Time End: 2004-08-19T00:00:00 * Elevation Start: -10.0 m * Elevation End: -10.9 m * Location: North Dvina River mouth area * Method/Device: Multiple investigations (MULT)
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
7 datasets
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Datasets listed in this publication series
- Gar'kusha, DN; Fedorov, YA; Khromov, MI (2010): (Table 1) Methane concentrations in wet bottom sediments from the mouth area of the North Dvina River. https://doi.org/10.1594/PANGAEA.763826
- Gar'kusha, DN; Fedorov, YA; Khromov, MI (2010): (Table 2a) Temperature, salinity, oxygen, and methane concentration in waters of the North Dvina River mouth area on 18 August 2004 during the low tide phase. https://doi.org/10.1594/PANGAEA.763828
- Gar'kusha, DN; Fedorov, YA; Khromov, MI (2010): (Table 2b) Temperature, salinity, oxygen, and methane concentration in waters of the North Dvina River mouth area on 19 August 2004 during the high tide phase. https://doi.org/10.1594/PANGAEA.763831
- Gar'kusha, DN; Fedorov, YA; Khromov, MI (2010): (Table 2c) Temperature, salinity, oxygen, and methane concentration in waters of the Severnaya Dvina River mouth area on 28 July 2005 during the high tide phase. https://doi.org/10.1594/PANGAEA.763835
- Gar'kusha, DN; Fedorov, YA; Khromov, MI (2010): (Table 2d) Methane concentrations in waters of the Severnaya Dvina River mouth area on 15 August 2006. https://doi.org/10.1594/PANGAEA.763830
- Gar'kusha, DN; Fedorov, YA; Khromov, MI (2010): (Table 3) Methane concentration in waters of the North Dvina River mouth area in 2004, 2005, and 2006. https://doi.org/10.1594/PANGAEA.763836
- Gar'kusha, DN; Fedorov, YA; Khromov, MI (2010): (Table 4) Diurnal variations of temperature, salinity, oxygen, and methane concentrations in waters of the North Dvina River delta and in the Dvina Bay of the White Sea in August 2004. https://doi.org/10.1594/PANGAEA.763833