Climate deterioration and angkor’s demise

Yoshinori Yasuda*, Hiroo Nasu, Toshiyuki Fujiki, Kazuyoshi Yamada, Junko Kitagawa, Katsuya Gotanda, Shuichi Toyama, Mitsuru Okuno, Yuichi Mori

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingChapter

3 Citations (Scopus)


Reconstruction of the paleoclimate based on analyses of annually laminated sediments in Japan and moat sediments from Angkor Thom in Cambodia indicates that there had been a period of drastic cooling during AD 1430–1500 accompanied by a weakening of monsoon activity. The annual mean temperatures show that—compared to the peak of medieval warm epoch around AD 1150—the mean temperature dropped by nearly 5°C in AD 1430. The climatic cooling brought about the weakening of the summer monsoon, which in turn would have resulted in the delayed arrival of the wet season. This might have had a catastrophic impact on rice cultivation in Cambodia leading to the decline of the Khmer Civilization.

Original languageEnglish
Title of host publicationAdvances in Asian Human-Environmental Research
PublisherSpringer International Publishing
Number of pages32
Publication statusPublished - 2013

Publication series

NameAdvances in Asian Human-Environmental Research
ISSN (Print)1879-7180
ISSN (Electronic)1879-7199


  • Annually laminated sediments
  • Climate deterioration
  • Demise of the angkorian civilization
  • Monsoon activities

ASJC Scopus subject areas

  • Global and Planetary Change
  • Geography, Planning and Development
  • Nature and Landscape Conservation
  • Management, Monitoring, Policy and Law


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