Landscape scale determinants of periglacial features in subarctic Finland: a grid‐based modelling approach

Jan Hjort; Miska Luoto; Matti Seppälä

doi:10.1002/ppp.584

journal article Apr 01, 2007

Landscape scale determinants of periglacial features in subarctic Finland: a grid‐based modelling approach

Jan Hjort

Miska Luoto

Matti Seppälä

Permafrost and Periglacial Processes Vol. 18 No. 2 pp. 115-127 · Wiley

View at Publisher Save 10.1002/ppp.584

Abstract

AbstractIdentification of the environmental drivers of geomorphological processes in cold regions is a central topic in periglacial research. The objective of this study was to develop and test a methodology to: (1) predict the occurrence of palsas, earth hummocks, sorted solifluction sheets and periglacial deflation sites in a subarctic landscape and (2) determine the most important environmental factors affecting the distribution of these features at the landscape scale. The study was performed using an empirically‐derived data‐set of landforms from an area of 600 km2 in northern Finland at a 25 ha resolution (n = 2272). Logistic regression and hierarchical partitioning were used to analyse the data and the predictive performance of the models was evaluated using area under the curve (AUC) measures. The explanatory variables highlighted as important predictors of the occurrence of periglacial features coincided well with the hypothesised determinants. Predictions for palsa, earth hummock and sorted solifluction sheet models were excellent (AUC = 0.92–0.95) and the deflation site model was good (AUC = 0.81). The results encourage further application of the grid‐based modelling approach, for example in predicting feature occurrences in other periglacial regions, studying scale dependency of process‐environment interactions and determining the effect of climate change on the distribution of frost‐related processes. Copyright © 2007 John Wiley & Sons, Ltd.

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References

67

[1]

Åkerman J "Studies on periglacial geomorphology in West Spitsbergen" Medsdelanden från Lunds Universitets Geografiska Institution, Avhandlingar (1980)

[2]

Anonymous (2002)

[3]

10.1002/(sici)1096-9837(199812)23:13<1185::aid-esp928>3.0.co;2-w

[4]

Atlas of Finland (1987)

[5]

10.2307/2404755

[6]

Paraglacial geomorphology

Colin K. Ballantyne

Quaternary Science Reviews 10.1016/s0277-3791(02)00005-7

[7]

Ballantyne CK (1994)

[8]

A physically based, variable contributing area model of basin hydrology / Un modèle à base physique de zone d'appel variable de l'hydrologie du bassin versant

K. J. BEVEN, M. J. KIRKBY

Hydrological Sciences Bulletin 10.1080/02626667909491834

[9]

10.1016/s0169-555x(01)00027-7

[10]

10.1016/j.geomorph.2006.04.003

[11]

10.2307/2684366

[12]

Clark MJ (1988)

[13]

Climatological Statistics in Finland 1961–1990 (1991)

[14]

Crawley MJ (1993)

[15]

10.1016/0169-555x(92)90026-k

[16]

10.1046/j.1466-822x.2003.00322.x

[17]

ESRI (1991)

[18]

10.1002/ppp.384

[19]

10.1002/ppp.554

[20]

10.1002/(sici)1099-1530(199710/12)8:4<371::aid-ppp263>3.0.co;2-7

[21]

10.3354/cr032001

[22]

10.1139/t82-047

[23]

10.1191/0309133305pp440ra

[24]

10.1002/ppp.374

[25]

10.1890/06-0539

[26]

Harris SA "Distribution of zonal permafrost landforms with freezing and thawing indeces" Biuletyn Peryglacjalny (1982)

[27]

10.14430/arctic1288

[28]

10.1080/00291950510037377

[29]

Hjort J (2006)

[30]

10.3189/s026030550001613x

[31]

10.2307/1942661

[32]

10.1016/j.geomorph.2004.11.005

[33]

10.1191/095968399668228352

[34]

10.1002/ppp.3430030210

[35]

King L "Permafrost thickness and distribution in Finnish Lapland – Results of Geoelectrical soundings" Polarforshung (1987)

[36]

10.1080/136588197242266

[37]

10.2307/1939924

[38]

10.1002/ppp.480

[39]

10.1002/ppp.482

[40]

10.1016/j.geomorph.2004.10.006

[41]

10.1016/j.geomorph.2006.03.001

[42]

10.1002/ppp.304

[43]

10.1002/esp.1099

[44]

10.1111/j.1442-9993.1996.tb00602.x

[45]

10.1016/s0012-8252(01)00057-5

[46]

10.1002/(sici)1099-1530(199701)8:1<107::aid-ppp237>3.0.co;2-z

[47]

10.1002/(sici)1099-1530(199804/06)9:2<147::aid-ppp278>3.0.co;2-9

[48]

Generalized Linear Models

P. McCullagh, J. A. Nelder

10.1007/978-1-4899-3242-6

[49]

Meriläinen K "The granulite complex and adjacent rock in Lapland, northern Finland" Bulletin of Geological Survey of Finland (1976)

[50]

Digital terrain modelling: A review of hydrological, geomorphological, and biological applications

I. D. Moore, R. B. Grayson, A. R. Ladson

Hydrological Processes 10.1002/hyp.3360050103

Showing 50 of 67 references

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Details

Published: Apr 01, 2007
Vol/Issue: 18(2)
Pages: 115-127
License: View

Authors

J

Jan Hjort

Department of Geography; University of Oulu; P.O. Box 3000 90014 Oulu Finland

Cite This Article

Jan Hjort, Miska Luoto, Matti Seppälä (2007). Landscape scale determinants of periglacial features in subarctic Finland: a grid‐based modelling approach. Permafrost and Periglacial Processes, 18(2), 115-127. https://doi.org/10.1002/ppp.584

Landscape scale determinants of periglacial features in subarctic Finland: a grid‐based modelling approach

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