Oman corals suggest that a stronger winter shamal season caused the Akkadian Empire (Mesopotamia) collapse

@article{Watanabe2019OmanCS,
  title={Oman corals suggest that a stronger winter shamal season caused the Akkadian Empire (Mesopotamia) collapse},
  author={Takaaki K. Watanabe and Tsuyoshi Watanabe and Atsuko Yamazaki and Miriam Pfeiffer},
  journal={Geology},
  year={2019}
}
The Akkadian Empire was the first united empire in Mesopotamia and was established at 4.6 kyr B.P. (where present is A.D. 1950). The empire abruptly collapsed in 4.2 ± 0.2 kyr B.P. Seasonal-scale climatic dynamics behind this collapse have not yet been resolved. Here, we present monthly climatic parameters (temperature and hydrology) inferred from fossil Omani corals that lived between 4.5 and 2.9 kyr B.P. Winter temperatures derived from a modern Omani coral correlate with winter shamal… 

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