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Is there a climatic control on Icelandic volcanism?
- Source :
- Cooper, C L, Savov, I P, Patton, H, Hubbard, A, Ivanovic, R F, Carrivick, J L & Swindles, G T 2020, ' Is there a climatic control on Icelandic volcanism? ', Quaternary Science Advances, vol. 1, 100004 . https://doi.org/10.1016/j.qsa.2020.100004, Quaternary Science Advances, Vol 1, Iss, Pp 100004-(2020)
- Publication Year :
- 2020
-
Abstract
- The evidence for periods of increased volcanic activity following deglaciation, such as following ice sheet retreat after the Last Glacial Maximum, has been examined in several formerly glaciated areas, including Iceland, Alaska, and the Andean Southern Volcanic Zone. Here we present new evidence supporting the theory that during episodes of cooling in the Holocene, Icelandic volcanic activity decreased. By examining proximal and distal tephra records from Iceland spanning the last 12,500 years, we link two observed tephra minima to documented periods of climatic cooling and glacial advance, at 8.3 to 8 and 5.2 to 4.9 cal kyr BP. We simulate these periods in atmosphere-ocean and ice sheet models to assess the potential validity of the postglacial ‘unloading effect’ on Icelandic volcanic systems. We conclude that an increase in glacial cover may have decreased shallow magma ascent rates, thus limiting eruption potential and producing apparent quiescent periods in proximal and distal tephra records. However, several major uncertainties remain regarding the theory, including geographical and temporal preservation biases and the importance of any unloading effects against other factors, and these will require more prolonged investigation in future research.
- Subjects :
- Isostasy
Volcanism
Unloading effect
Deglaciation
Earth and Planetary Sciences (miscellaneous)
Glacial period
lcsh:CC1-960
Tephra
Holocene
VDP::Mathematics and natural science: 400
Crustal loading
Earth-Surface Processes
Pharmacology
geography
geography.geographical_feature_category
lcsh:Geography. Anthropology. Recreation
Last Glacial Maximum
Geology
VDP::Matematikk og Naturvitenskap: 400
humanities
Volcano
lcsh:G
Magma
lcsh:Archaeology
population characteristics
Physical geography
Ice sheet
geographic locations
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Journal :
- Cooper, C L, Savov, I P, Patton, H, Hubbard, A, Ivanovic, R F, Carrivick, J L & Swindles, G T 2020, ' Is there a climatic control on Icelandic volcanism? ', Quaternary Science Advances, vol. 1, 100004 . https://doi.org/10.1016/j.qsa.2020.100004, Quaternary Science Advances, Vol 1, Iss, Pp 100004-(2020)
- Accession number :
- edsair.doi.dedup.....2f0dfaaacaa3c9b5f0b71b2c4885cdc2