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  • Presentation | PP31F: Southeast Asia and the Indo-Pacific: Past, Present, and Future Climate and Environment Poster
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  • PP31F-1080: Southeast Asian Autumn Monsoon Response to Orbital Changes in Insolation During MIS 6 Recorded in a Central Vietnamese Speleothem
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Author(s):
Jahmaine Renzo Yambing, Massachusetts Institute of Technology & Woods Hole Oceanographic Institution Joint Program (First Author, Presenting Author)
David McGee, Massachusetts Institute of Technology
Kathleen Johnson, University of California, Irvine
Salwa Sidahmed, University of California Irvine
Michael Griffiths, William Paterson University
Elizabeth Patterson, Lafayette College
Quốc Đỗ-Trọng, Vietnam National University
Thanh Bui, Phong Nha Ke Bang National Park
Mùi Xuân, Phong Nha Ke Bang National Park
Quốc Hùng Nguyễn, Phong Nha Ke Bang National Park


Cave rocks called speleothems grow in layers over time. These layers have a unique chemical fingerprint that reflect the environmental conditions, such as temperature and precipitation, of when it grew. Here we are studying a speleothem from Vietnam to learn how seasonal rainfall has changed there over time. This rock grew over ~20,000 years during one of Earth's recent glacial periods when the sun's solar heating over Southeast Asia increased. Our early data suggests that this change in solar energy influenced rainfall in the region and is reflected in the chemical fingerprint of our speleothem's layers.



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