Ice age: Difference between revisions

The weight of the redistributed surface mass loaded the [[lithosphere]], caused it to [[Bending|flex]] and also induced [[Stress (mechanics)|stress]] within Earth. The presence of the glaciers generally suppressed the movement of [[Fault (geology)|faults]] below.<ref>{{cite book |author=Johnston, A. |chapter=The effect of large ice sheets on earthquake genesis |editor1=Gregersen, S. |editor2=Basham, P. |title=Earthquakes at North-Atlantic passive margins: Neotectonics and postglacial rebound |publisher=Kluwer |location=Dordrecht |year=1989 |isbn=978-0-7923-0150-9 |pages=581–599}}</ref><ref>{{Cite journal|last1=Wu|first1=Patrick|last2=Hasegawa|first2=Henry S.|date=October 1996|title=Induced stresses and fault potential in eastern Canada due to a realistic load: a preliminary analysis|journal=Geophysical Journal International|language=en|volume=127|issue=1|pages=215–229|doi=10.1111/j.1365-246X.1996.tb01546.x|bibcode=1996GeoJI.127..215W|doi-access=free}}</ref><ref>{{cite journal | last1 = Turpeinen | first1 = H. | last2 = Hampel | first2 = A. | last3 = Karow | first3 = T. | last4 = Maniatis | first4 = G. | year = 2008 | title = Effect of ice sheet growth and melting on the slip evolution of thrust faults | journal = [[Earth and Planetary Science Letters]] | volume = 269 | issue = 1–2 | pages = 230–241 |bibcode = 2008E&PSL.269..230T |doi = 10.1016/j.epsl.2008.02.017}}</ref> During [[deglaciation]], the faults experience accelerated slip triggering [[earthquake]]s. Earthquakes triggered near the ice margin may in turn accelerate [[ice calving]] and may account for the [[Heinrich events]].<ref>{{Cite journal|last1=Hunt|first1=A. G.|last2=Malin|first2=P. E.|date=May 1998|title=Possible triggering of Heinrich events by ice-load-induced earthquakes|journal=Nature|language=en|volume=393|issue=6681|pages=155–158|doi=10.1038/30218|issn=0028-0836|bibcode=1998Natur.393..155H|s2cid=4393858}}</ref> As more ice is removed near the ice margin, more [[intraplate earthquake]]s are induced and this positive feedback may explain the fast collapse of ice sheets.

 

 

==Future ice ages==

{{Main|Next glacial period}}