Citation:

epic.29867.d001

Name: Sediment budget of the Laptev Sea, sediment core PS51/092-12, PM9499, PM9462 (Table 2)
Published: 2002
License: https://creativecommons.org/licenses/by/3.0/

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Abstract:

This article presents a mass balance calculation of the sediment sources and sinks of the Laptev Sea. Sediment input into three regional sectors calculated on the basis of fluvial sediment discharge and coastal erosion sediment supply is compared with sediment output as estimated from sedimentation rates of well-dated marine sediment cores and data on sediment export to the central Arctic Ocean by sea ice and through bottom currents.

Within the uncertainties of the calculations, input and output are very well balanced. The calculation reveals that the sediment budget of the Laptev Sea is mainly controlled by fluvial and coastal sediment input. The major fraction of the material is simply deposited on the Laptev Sea shelf. However, for the western Laptev Sea, where sedimentation rates are low due to the absence of large rivers, export by sea ice is the main output factor.

Project(s):

Arctic Coastal Dynamics (ACD)

Laptev Sea System (LSS)

Coverage:

Median Latitude: 74.865646 * Median Longitude: 127.050388 * South-bound Latitude: 74.502170 * West-bound Longitude: 115.007000 * North-bound Latitude: 75.501600 * East-bound Longitude: 136.005330

Date/Time Start: 1994-09-12T00:00:00 * Date/Time End: 1998-08-03T15:50:00

Minimum DEPTH, sediment/rock: 0 m * Maximum DEPTH, sediment/rock: 0 m

Event(s):

PM9462-1 * Latitude: 74.502170 * Longitude: 136.005330 * Date/Time: 1994-09-12T00:00:00 * Elevation: -27.0 m * Recovery: 0.53 m * Location: Laptev Sea * Campaign: * Basis: Professor Multanovskiy * Method/Device: Giant box corer (GKG)

PM9499-1 * Latitude: 75.501600 * Longitude: 115.007000 * Date/Time: 1994-09-24T00:00:00 * Elevation: -48.0 m * Location: Laptev Sea * Campaign: * Basis: Professor Multanovskiy * Method/Device: (CTD-RO)

PS51/092-12 * Latitude: 74.593167 * Longitude: 130.138833 * Date/Time Start: 1998-08-03T15:30:00 * Date/Time End: 1998-08-03T15:50:00 * Elevation: -32.0 m * Penetration: 7.1 m * Recovery: 5.61 m * Location: Laptev Sea * Campaign: (PS51 Transdrift-V) * Basis: * Method/Device: Kasten corer (KAL)

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Comment
1	Event label	Event
2	Latitude of event	Latitude
3	Longitude of event	Longitude
4	DEPTH, sediment/rock	Depth sed	m		Geocode
5	AGE	Age	ka BP		Geocode
6	Age, minimum/young	Age min	ka	Rachold, Volker
7	Age, maximum/old	Age max	ka	Rachold, Volker
8	Density, dry bulk	DBD	g/cm³	Rachold, Volker
9	Sedimentation rate	SR	cm/ka	Rachold, Volker
10	Accumulation rate, mass	MAR	g/cm²/ka	Rachold, Volker
11	Sediment export	Sedim exp	t/a	Rachold, Volker	total sea-ice export
12	Sediment export	Sedim exp	t/a	Rachold, Volker	total bottom transport

License:

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

Size:

21 data points

Data

Download dataset as tab-delimited text — use the following character encoding:

1 Event	2 Latitude	3 Longitude	5 Age [ka BP]	7 Age max [ka]	8 DBD [g/cm³]	9 SR [cm/ka]	10 MAR [g/cm²/ka]	11 Sedim exp [t/a] (total sea-ice export)	12 Sedim exp [t/a] (total bottom transport)
PM9462-1	74.5022	136.0053	2.5	5	0.92	50.0	46.0	8300000	2070000
PM9499-1	75.5016	115.0070	2.5	5	1.05	5.6	5.9	8300000	2070000
PS51/092-12	74.5932	130.1388	2.5	5	0.81	49.0	40.0	8300000	2070000