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Meltwater pulse 1A

Index Meltwater pulse 1A

Meltwater pulse 1A (MWP1a) is the name used by Quaternary geologists, paleoclimatologists, and oceanographers for a period of rapid post-glacial sea level rise during which global sea level rose between and in about 400–500 years, giving mean rates of roughly /yr. [1]

32 relations: Allerød oscillation, Antarctic ice sheet, Antarctic Peninsula, Bølling-Allerød warming, Cordilleran Ice Sheet, Deglaciation, East Antarctic Ice Sheet, Geologist, Gulf of Mexico, Holocene, Ice age, Ice calving, Laurentide Ice Sheet, Mac. Robertson Land, Meltwater, Meltwater pulse 1B, Mississippi River, Oceanography, Orca Basin, Paleoclimatology, Proxy (climate), Quaternary, Ross Sea, Scotia Sea, Sea level, Sea level rise, Settlement of the Americas, Southern Ocean, Stadial, Termination (geomorphology), Weddell Sea, West Antarctic Ice Sheet.

Allerød oscillation

The Allerød oscillation (Allerødtiden) was a warm and moist global interstadial that occurred c.13,900 to 12,900 BP, nearly at the end of the last glacial period.

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Antarctic ice sheet

The Antarctic ice sheet is one of the two polar ice caps of the Earth.

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Antarctic Peninsula

The Antarctic Peninsula is the northernmost part of the mainland of Antarctica, located at the base of the Southern Hemisphere.

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Bølling-Allerød warming

The Bølling-Allerød interstadial was an abrupt warm and moist interstadial period that occurred during the final stages of the last glacial period.

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Cordilleran Ice Sheet

The Cordilleran ice sheet was a major ice sheet that periodically covered large parts of North America during glacial periods over the last ~2.6 million years.

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Deglaciation

Deglaciation describes the transition from full glacial conditions during ice ages, to warm interglacials, characterized by global warming and sea level rise due to change in continental ice volume (IPCC AR5).

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East Antarctic Ice Sheet

The East Antarctic Ice Sheet (EAIS) is one of two large ice sheets in Antarctica, and the largest on the entire planet.

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Geologist

A geologist is a scientist who studies the solid and liquid matter that constitutes the Earth as well as the processes that shape it.

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Gulf of Mexico

The Gulf of Mexico (Golfo de México) is an ocean basin and a marginal sea of the Atlantic Ocean, largely surrounded by the North American continent.

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Holocene

The Holocene is the current geological epoch.

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Ice age

An ice age is a period of long-term reduction in the temperature of Earth's surface and atmosphere, resulting in the presence or expansion of continental and polar ice sheets and alpine glaciers.

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Ice calving

Ice calving, also known as glacier calving or iceberg calving, is the breaking of ice chunks from the edge of a glacier.

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Laurentide Ice Sheet

The Laurentide Ice Sheet was a massive sheet of ice that covered millions of square kilometers, including most of Canada and a large portion of the northern United States, multiple times during the Quaternary glacial epochs— from 2.588 ± 0.005 million years ago to the present.

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Mac. Robertson Land

Mac.

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Meltwater

Meltwater is water released by the melting of snow or ice, including glacial ice, tabular icebergs and ice shelves over oceans.

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Meltwater pulse 1B

Meltwater pulse 1B (MWP1b) is the name used by Quaternary geologists, paleoclimatologists, and oceanographers for a period of either rapid or just accelerated post-glacial sea level rise that occurred at the beginning of the Holocene and after the end of the Younger Dryas.

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Mississippi River

The Mississippi River is the chief river of the second-largest drainage system on the North American continent, second only to the Hudson Bay drainage system.

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Oceanography

Oceanography (compound of the Greek words ὠκεανός meaning "ocean" and γράφω meaning "write"), also known as oceanology, is the study of the physical and biological aspects of the ocean.

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Orca Basin

The Orca Basin is a mid-slope, silled, mini-basin in the northern Gulf of Mexico some 300 km southwest of the Mississippi River mouth on the Louisiana continental slope.

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Paleoclimatology

Paleoclimatology (in British spelling, palaeoclimatology) is the study of changes in climate taken on the scale of the entire history of Earth.

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Proxy (climate)

In the study of past climates ("paleoclimatology"), climate proxies are preserved physical characteristics of the past that stand in for direct meteorological measurements and enable scientists to reconstruct the climatic conditions over a longer fraction of the Earth's history.

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Quaternary

Quaternary is the current and most recent of the three periods of the Cenozoic Era in the geologic time scale of the International Commission on Stratigraphy (ICS).

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Ross Sea

The Ross Sea is a deep bay of the Southern Ocean in Antarctica, between Victoria Land and Marie Byrd Land and within the Ross Embayment.

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Scotia Sea

The Scotia Sea is a sea located at the northern edge of the Southern Ocean at its boundary with the South Atlantic Ocean.

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Sea level

Mean sea level (MSL) (often shortened to sea level) is an average level of the surface of one or more of Earth's oceans from which heights such as elevations may be measured.

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Sea level rise

A sea level rise is an increase in global mean sea level as a result of an increase in the volume of water in the world’s oceans.

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Settlement of the Americas

Paleolithic hunter-gatherers first entered North America from the North Asian Mammoth steppe via the Beringia land bridge which had formed between northeastern Siberia and western Alaska due to the lowering of sea level during the Last Glacial Maximum.

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Southern Ocean

The Southern Ocean, also known as the Antarctic Ocean or the Austral Ocean, comprises the southernmost waters of the World Ocean, generally taken to be south of 60° S latitude and encircling Antarctica.

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Stadial

Stadials and interstadials are phases dividing the Quaternary period, or the last 2.6 million years.

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Termination (geomorphology)

Termination, as used by Quaternary geologists, oceanographers, and paleoclimatologists is the period of time during an glacial cycle when there is a relatively rapid transition from full glacial climates to full interglacial climates.

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Weddell Sea

The Weddell Sea is part of the Southern Ocean and contains the Weddell Gyre.

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West Antarctic Ice Sheet

The Western Antarctic Ice Sheet (WAIS) is the segment of the continental ice sheet that covers West (or Lesser) Antarctica, the portion of Antarctica on the side of the Transantarctic Mountains which lies in the Western Hemisphere.

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Meltwater Pulse 1A.

References

[1] https://en.wikipedia.org/wiki/Meltwater_pulse_1A

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