GroMoPo Metadata for Nordfjord glacier ice model

Authors:

GroMoPo Emilia Leijnse

Owners:

gromopo_admin

Type:

Resource

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The size of this resource is 1.9 KB

Created:

Feb 08, 2023 at 2:47 a.m.

Last updated:

Feb 08, 2023 at 2:47 a.m.

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Abstract

Basal water pressure and water flow patterns are significant factors in controlling the behavior of an ice sheet, because they influence ice-sheet thickness, stability and extent. Water produced by basal melting may infiltrate the subsurface, or occur as sheet or channelized flow at the ice/bed interface. We examine subglacial groundwater conditions along a flowline of the Scandinavian ice sheet through Nordfjord, in the western fjords region of southern Norway, using a steady-state, two-dimensional groundwater-flow model. Meltwater input to the groundwater model is calculated by a two-dimensional, time-dependent, thermomechanically coupled ice-flow model oriented along the same flowline. Model results show that the subglacial sediments could not have transmitted all the meltwater out of the fjord during times of ice advance and when the ice sheet was at its maximum position at the edge of the continental shelf. In order for pore-water pressures to remain below the overburden pressure of the overlying ice, other paths of subglacial drainage are necessary to remove excess water. During times of retreat, the subglacial aquifer is incapable of transmitting all the meltwater that was probably generated. Pulses of meltwater reaching the bed could explain non-climatically driven margin readvances during the overall retreat phase.

Subject Keywords

Coverage

Spatial

Coordinate System/Geographic Projection:

WGS 84 EPSG:4326

Coordinate Units:

Decimal degrees

Place/Area Name:

Norway

North Latitude

62.4105°

East Longitude

9.7685°

South Latitude

58.3477°

West Longitude

4.8343°

Streets Terrain Satelite

Spatial Extent

Content

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Additional Metadata

Name	Value
DOI	10.3189/172756507781833811
Depth	1000
Scale	10 001 - 100 000 kmÂ²
Layers	2-5 layers
Purpose	Climate change
GroMoPo_ID	138
IsVerified	True
Model Code	MODFLOW
Model Link	https://doi.org/10.3189/172756507781833811
Model Time	SS
Model Year	2007
Model Authors	C. A. Moeller, D. M. Mickelson, M. P. Anderson, C. Winguth
Model Country	Norway
Data Available	Report/paper only
Developer Email	moeller@geology.wisc.edu
Dominant Geology	Unconsolidated sediments
Developer Country	University of Wisconsin-Madison, USA
Publication Title	Groundwater flow beneath Late Weichselian glacier ice in Nordfjord, Norway
Original Developer	No
Additional Information	This groundwater model assesses the subglacial groundwater flow in the western fjords region in southern Norway. Meltwater input to the groundwater model is calculated by a two-dimensional, time-dependent, thermomechanically coupled ice-flow model oriented along the same flowline
Integration or Coupling	Ice flow modelling and meltwater modelling
Evaluation or Calibration	Static water levels
Geologic Data Availability

How to Cite

GroMoPo, E. Leijnse (2023). GroMoPo Metadata for Nordfjord glacier ice model, HydroShare, http://www.hydroshare.org/resource/09f1782d08924b82b6f14d06153a11d1

This resource is shared under the Creative Commons Attribution CC BY.

http://creativecommons.org/licenses/by/4.0/

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