Meltwater pulse 1A (original) (raw)
L'impulsion de fonte 1A, en anglais meltwater pulse 1A, est un événement de brusque augmentation du niveau des mers, survenu à la fin du dernier âge glaciaire, à la fin de l'époque du Pléistocène.
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| dbo:abstract | Als Schmelzwasserpuls 1A wird eine Phase besonders schnellen Ansteigens des Meeresspiegels am Ende der letzten Kaltzeit bezeichnet, die ursächlich mit einer rapiden Entgletscherung und dem Eintrag großer Schmelzwassermengen in die Meere zu jener Zeit in Verbindung gebracht wird. Der Puls setzte vor ungefähr 14.200 bis 14.700 Jahren ein und ließ den Meeresspiegel innerhalb von 400 bis 500 Jahren global um 20 Meter ansteigen. Der Schmelzwasserpuls löste den antarktischen Kälterückfall aus. Als Quelle des Schmelzwassers wird ein kollabierender Eisschild, vermutlich in der Antarktis oder zwischen Kanada und Grönland, angenommen. (de) Meltwater pulse 1A (MWP1a) is the name used by Quaternary geologists, paleoclimatologists, and oceanographers for a period of rapid post-glacial sea level rise, between 13,500 and 14,700 calendar years ago, during which global sea level rose between 16 meters (52 ft) and 25 meters (82 ft) in about 400–500 years, giving mean rates of roughly 40–60 mm (0.13–0.20 ft)/yr. Meltwater pulse 1A is also known as catastrophic rise event 1 (CRE1) in the Caribbean Sea. The rates of sea level rise associated with meltwater pulse 1A are the highest known rates of post-glacial, eustatic sea level rise. Meltwater pulse 1A is also the most widely recognized and least disputed of the named, postglacial meltwater pulses. Other named, postglacial meltwater pulses are known most commonly as meltwater pulse 1A0 (meltwater pulse 19ka), meltwater pulse 1B, meltwater pulse 1C, meltwater pulse 1D, and meltwater pulse 2. It and these other periods of rapid sea level rise are known as meltwater pulses because the inferred cause of them was the rapid release of meltwater into the oceans from the collapse of continental ice sheets. (en) L'impulsion de fonte 1A, en anglais meltwater pulse 1A, est un événement de brusque augmentation du niveau des mers, survenu à la fin du dernier âge glaciaire, à la fin de l'époque du Pléistocène. (fr) |
| dbo:thumbnail | wiki-commons:Special:FilePath/Post-Glacial_Sea_Level.png?width=300 |
| dbo:wikiPageExternalLink | http://www4.ncsu.edu/%7Ejpliu/ https://books.google.it/books/about/Atlantide_%C3%A8_il_blocco_continentale_Sard.html%3Fid=nSxUzgEACAAJ&redir_esc=y https://web.archive.org/web/20070202144333/http:/www.giss.nasa.gov/research/briefs/gornitz_09/ https://web.archive.org/web/20120716222100/http:/www.giss.nasa.gov/research/briefs/gornitz_10/ https://web.archive.org/web/20150830133431/http:/www4.ncsu.edu/~jpliu/sealevel/ |
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| rdf:type | yago:Abstraction100002137 yago:Attribute100024264 yago:GeologicalTime115116283 yago:IceAge115255195 yago:Period115247518 yago:WikicatIceAges yago:Time100028270 |
| rdfs:comment | L'impulsion de fonte 1A, en anglais meltwater pulse 1A, est un événement de brusque augmentation du niveau des mers, survenu à la fin du dernier âge glaciaire, à la fin de l'époque du Pléistocène. (fr) Als Schmelzwasserpuls 1A wird eine Phase besonders schnellen Ansteigens des Meeresspiegels am Ende der letzten Kaltzeit bezeichnet, die ursächlich mit einer rapiden Entgletscherung und dem Eintrag großer Schmelzwassermengen in die Meere zu jener Zeit in Verbindung gebracht wird. Der Puls setzte vor ungefähr 14.200 bis 14.700 Jahren ein und ließ den Meeresspiegel innerhalb von 400 bis 500 Jahren global um 20 Meter ansteigen. Der Schmelzwasserpuls löste den antarktischen Kälterückfall aus. (de) Meltwater pulse 1A (MWP1a) is the name used by Quaternary geologists, paleoclimatologists, and oceanographers for a period of rapid post-glacial sea level rise, between 13,500 and 14,700 calendar years ago, during which global sea level rose between 16 meters (52 ft) and 25 meters (82 ft) in about 400–500 years, giving mean rates of roughly 40–60 mm (0.13–0.20 ft)/yr. Meltwater pulse 1A is also known as catastrophic rise event 1 (CRE1) in the Caribbean Sea. The rates of sea level rise associated with meltwater pulse 1A are the highest known rates of post-glacial, eustatic sea level rise. Meltwater pulse 1A is also the most widely recognized and least disputed of the named, postglacial meltwater pulses. Other named, postglacial meltwater pulses are known most commonly as meltwater pulse 1A0 (en) |
| rdfs:label | Schmelzwasserpuls 1A (de) Impulsion de fonte 1A (fr) Meltwater pulse 1A (en) |
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