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Buckley B.M.,Lamont Doherty Earth Observatory | Fletcher R.,University of Sydney | Wang S.Y.S.,Utah State University | Zottoli B.,Ecole francaise dExtreme Orient EFEO | Pottier C.,Princess Maha Chakri Sirindhorn Anthropology Center
Quaternary Science Reviews | Year: 2014

The early 21st century has seen vigorous scientific interest in the Asian monsoon and significant development of paleo-proxies of monsoon strength. These include the Monsoon Asian Drought Atlas - a 700-year, gridded reconstruction of hydroclimate derived from 327 tree ring records - and several long speleothem records from China and India. Similar progress has been made on the study of monsoon climate dynamics through re-analysis data products and General Circulation Model diagnostics. The story has emerged of a variable monsoon over the latter Holocene, with extended droughts and anomalously wet episodes that occasionally and profoundly influenced the course of human history. We focus on Southeast Asia where an anomalous period of unstable climate coincided with the demise of the capital of the Khmer Empire at Angkor between the 14th and the 16th centuries, and we suggest that protracted periods of drought and deluge rain events, the latter of which damaged Angkor's extensive water management systems, may have been a significant factor in the subsequent transfer of the political capital away from Angkor. The late 16th and early 17th century experienced climate instability and the collapse of the Ming Dynasty in China under a period of drought, while Tonkin experienced floods and droughts throughout the 17th century. The 18th century was a period of great turmoil across Southeast Asia, when all of the region's polities saw great unrest and rapid realignment during one of the most extended periods of drought of the past millennium. New paleo-proxy records and the incorporation of historical documentation will improve future analyses of the interaction between climate extremes, social behavior and the collapse or disruption of regional societies, a subject of increasing concern given the uncertainties surrounding projections for future climate. © 2014 Elsevier Ltd.

Techawut C.,Chiang Mai University | Inkeaw P.,Chiang Mai University | Chaijaruwanich J.,Chiang Mai University | Hutangkura T.,Princess Maha Chakri Sirindhorn Anthropology Center
Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) | Year: 2013

Digitization has been applied to the Thai Lanna script, or so-called the Fakkham script. Two major requirements to create a digital collection of the Thai Lanna inscriptions is to preserve them in the digital format and to infer for the engraving period of each inscriptions supporting the linguists and historians to interpret the contents within an appropriate context. The digital inscription images can be processed by the image processing techniques to create an important output, a set of each character images. It does not only use for a data set training in a preservation process, but also indicate the evolution of ancient characters, character relationships and stories in the historical times. This paper presents two key issues. First, the creation of metadata schema for the output describing Thai Lanna inscriptions and storing a set of character images by reusing and extending the metadata schema from Thai Lanna archives. Second, the architecture of utilization showing the contributions of our metadata schema design that serves as the foundation of the architecture. © Springer International Publishing 2013.

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