A Monte Carlo-tuned model of the flow in the NorthGRIP area

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A Monte Carlo-tuned model of the flow in the NorthGRIP area. / Grinsted, Aslak; Dahl-Jensen, Dorthe.

In: Annals of Glaciology, Vol. 35, No. 1, 2002, p. 527-530.

Research output: Contribution to journal › Journal article › Research › peer-review

Harvard

Grinsted, A & Dahl-Jensen, D 2002, 'A Monte Carlo-tuned model of the flow in the NorthGRIP area', Annals of Glaciology, vol. 35, no. 1, pp. 527-530. https://doi.org/10.3189/172756402781817130

APA

Grinsted, A., & Dahl-Jensen, D. (2002). A Monte Carlo-tuned model of the flow in the NorthGRIP area. Annals of Glaciology, 35(1), 527-530. https://doi.org/10.3189/172756402781817130

Vancouver

Grinsted A, Dahl-Jensen D. A Monte Carlo-tuned model of the flow in the NorthGRIP area. Annals of Glaciology. 2002;35(1):527-530. https://doi.org/10.3189/172756402781817130

Author

Grinsted, Aslak ; Dahl-Jensen, Dorthe. / A Monte Carlo-tuned model of the flow in the NorthGRIP area. In: Annals of Glaciology. 2002 ; Vol. 35, No. 1. pp. 527-530.

Bibtex

@article{2ad9396074c511dbbee902004c4f4f50,
title = "A Monte Carlo-tuned model of the flow in the NorthGRIP area",
abstract = "The North Greenland Icecore Project (NorthGRIP) drill site was chosenin order to obtain a good Eemian record. At the present depth, 3001m, the Eemian interstadialhas yet to be seen. Clearly the flow in this area is poorly understood and needsfurther investigation. After a review of specific features of the bottom topography, it isbelieved that the geology changes along the flowline. In order to investigate whether thisexplains the observed age-depth relationship at NorthGRIP, the inverse Monte Carlomethod has been applied to a simple model.The inversion reveals that the main reason noEemian is observed is a high basal melt rate (2.7mm/a). The melting is a consequence of ahigher geothermal heat flux than the expected 51mW/m^2 of the Precambrian shield. Fromour analyses it is concluded that the geothermal heat flux at NorthGRIP is 98mW/m^2.Thehigh basalmelt rate also gives rise to sliding at the bed. In addition to these results, an accumulationmodelhas been established specifically forNorthGRIP.These results are essentialfor further modelling of the NorthGRIP flow and depth-age relationship",
author = "Aslak Grinsted and Dorthe Dahl-Jensen",
note = "Paper id:: 10.3189/172756402781817130",
year = "2002",
doi = "10.3189/172756402781817130",
language = "English",
volume = "35",
pages = "527--530",
journal = "Annals of Glaciology",
issn = "0260-3055",
publisher = "International Glaciological Society",
number = "1",

}

RIS

TY - JOUR

T1 - A Monte Carlo-tuned model of the flow in the NorthGRIP area

AU - Grinsted, Aslak

AU - Dahl-Jensen, Dorthe

N1 - Paper id:: 10.3189/172756402781817130

PY - 2002

Y1 - 2002

N2 - The North Greenland Icecore Project (NorthGRIP) drill site was chosenin order to obtain a good Eemian record. At the present depth, 3001m, the Eemian interstadialhas yet to be seen. Clearly the flow in this area is poorly understood and needsfurther investigation. After a review of specific features of the bottom topography, it isbelieved that the geology changes along the flowline. In order to investigate whether thisexplains the observed age-depth relationship at NorthGRIP, the inverse Monte Carlomethod has been applied to a simple model.The inversion reveals that the main reason noEemian is observed is a high basal melt rate (2.7mm/a). The melting is a consequence of ahigher geothermal heat flux than the expected 51mW/m^2 of the Precambrian shield. Fromour analyses it is concluded that the geothermal heat flux at NorthGRIP is 98mW/m^2.Thehigh basalmelt rate also gives rise to sliding at the bed. In addition to these results, an accumulationmodelhas been established specifically forNorthGRIP.These results are essentialfor further modelling of the NorthGRIP flow and depth-age relationship

AB - The North Greenland Icecore Project (NorthGRIP) drill site was chosenin order to obtain a good Eemian record. At the present depth, 3001m, the Eemian interstadialhas yet to be seen. Clearly the flow in this area is poorly understood and needsfurther investigation. After a review of specific features of the bottom topography, it isbelieved that the geology changes along the flowline. In order to investigate whether thisexplains the observed age-depth relationship at NorthGRIP, the inverse Monte Carlomethod has been applied to a simple model.The inversion reveals that the main reason noEemian is observed is a high basal melt rate (2.7mm/a). The melting is a consequence of ahigher geothermal heat flux than the expected 51mW/m^2 of the Precambrian shield. Fromour analyses it is concluded that the geothermal heat flux at NorthGRIP is 98mW/m^2.Thehigh basalmelt rate also gives rise to sliding at the bed. In addition to these results, an accumulationmodelhas been established specifically forNorthGRIP.These results are essentialfor further modelling of the NorthGRIP flow and depth-age relationship

U2 - 10.3189/172756402781817130

DO - 10.3189/172756402781817130

M3 - Journal article

VL - 35

SP - 527

EP - 530

JO - Annals of Glaciology

JF - Annals of Glaciology

SN - 0260-3055

IS - 1

ER -

ID: 126256