Abrupt weakening of the summer monsoon in northwest India ∼4100 yr ago

@article{Dixit2014AbruptWO,
  title={Abrupt weakening of the summer monsoon in northwest India ∼4100 yr ago},
  author={Yama Dixit and David A. Hodell and Cameron A. Petrie},
  journal={Geology},
  year={2014},
  volume={42},
  pages={339-342}
}
Climate change has been suggested as a possible cause for the decline of urban centers of the Indus Civilization ~4000 yr ago, but extant paleoclimatic evidence has been derived from locations well outside the distribution of Indus settlements. Here we report an oxygen iso- tope record of gastropod aragonite (δ 18 O a ) from Holocene sediments of paleolake Kotla Dahar (Haryana, India), which is adjacent to Indus settlements and documents Indian summer mon- soon (ISM) variability for the past 6… 

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References

SHOWING 1-10 OF 38 REFERENCES
Abrupt weakening of the Indian summer monsoon at 8.2 kyr B.P.
An Abrupt Shift in the Indian Monsoon 4000 Years Ago
Climates, Landsca Geophysical Mon © 2012. American 10.1029/2012GM The emergence of high-resolution proxy records from the Asian monsoon region suggests that the monsoon system is bistable and can
Climate change at the 4.2 ka BP termination of the Indus valley civilization and Holocene south Asian monsoon variability
Planktonic oxygen isotope ratios off the Indus delta reveal climate changes with a multi‐centennial pacing during the last 6 ka, with the most prominent change recorded at 4.2 ka BP. Opposing
Holocene aridification of India
Spanning a latitudinal range typical for deserts, the Indian peninsula is fertile instead and sustains over a billion people through monsoonal rains. Despite the strong link between climate and
Holocene Paleoclimates of India
Late Pleistocene and Holocene drought events at Lake Tana, the source of the Blue Nile
Holocene Climate and Cultural Evolution in Late Prehistoric–Early Historic West Asia
Climate change and the collapse of the Akkadian empire: Evidence from the deep sea
The Akkadian empire ruled Mesopotamia from the headwaters of the Tigris-Euphrates Rivers to the Persian Gulf during the late third millennium B.C. Archeological evidence has shown that this highly
...
...