Dead-ice environments: a landsystems model for a debris-charged, stagnant lowland glacier margin, Kötlujökull

TY - CHAP

T1 - Dead-ice environments

T2 - a landsystems model for a debris-charged, stagnant lowland glacier margin, Kötlujökull

AU - Krüger, Johannes

AU - Kjær, Kurt H.

AU - Schomacker, Anders

PY - 2010

Y1 - 2010

N2 - Kötlujökull transports considerable amounts of supraglacial debris at its snout because of frontal oscillations with frequent ice advances followed by ice-margin stagnation. Kötlujökull provides suitable conditions of studying dead-ice melting and landscape formation in a debris-charged lowland glacier environment. The scientific challenges are to answer the key questions. What are the conditions for dead-ice formation? From which sources does the sediment cover originate? Which melting and reworking processes act in the ice-cored moraines? What is the rate of de-icing in the ice-cored moraines under humid, sub-polar conditions? Does this rate differ from rates reported from polar environments of dry continental nature? How will the sedimentary architecture appear in the geological record? How will the final landsystem appear?These key questions are answered in a review of research and conclusions on dead-ice melting and landscape formation from Kötlujökull. Processes and landform-sediment associations are linked to the current climate and glacier–volcano interaction.

AB - Kötlujökull transports considerable amounts of supraglacial debris at its snout because of frontal oscillations with frequent ice advances followed by ice-margin stagnation. Kötlujökull provides suitable conditions of studying dead-ice melting and landscape formation in a debris-charged lowland glacier environment. The scientific challenges are to answer the key questions. What are the conditions for dead-ice formation? From which sources does the sediment cover originate? Which melting and reworking processes act in the ice-cored moraines? What is the rate of de-icing in the ice-cored moraines under humid, sub-polar conditions? Does this rate differ from rates reported from polar environments of dry continental nature? How will the sedimentary architecture appear in the geological record? How will the final landsystem appear?These key questions are answered in a review of research and conclusions on dead-ice melting and landscape formation from Kötlujökull. Processes and landform-sediment associations are linked to the current climate and glacier–volcano interaction.

KW - Faculty of Science

KW - Kötlujökull

U2 - 10.1016/S1571-0866(09)01307-4

DO - 10.1016/S1571-0866(09)01307-4

M3 - Book chapter

T3 - Developments in Quaternary Science

SP - 105

EP - 126

BT - The Mýrdalsjökull Ice Cap, Iceland. Glacial processes, sediments and landforms on an active volcano

A2 - Schomacker, Anders

A2 - Krüger, Johannes

A2 - Kjær, Kurt H.

PB - Elsevier

ER -