Triple Oxygen Isotopes of Tap Water from Southeast Asia
Abstract
Triple oxygen isotopes of tap water from Southeast Asia
Shaoneng He1, Clarice Teo Jia Wen2, Dominik Jackisch1, Dhrubajyoti Samanta2, Xianfeng Wang1,2, and Nathalie Goodkin1,2,3 1Earth Observatory of Singapore, Nanyang Technological University, Singapore 639798 2Asian School of the Environment, Nanyang Technological University, Singapore 639798 3American Museum of Natural History, New York 10024, USA In recent years,17Oexcesshas been evaluated as a tracer of hydrological processes. Experimental and theoretical studies suggest 17Oexcessis less affected by temperature than is d-excess thus better reflects the relative humidity of the moisture source. However, actual observations are needed to confirm the experiments and help us to understand the drivers of 17Oexcessvariability before application to paleoclimate records. Previous studies on 17Oexcesslargely focused on precipitation and ice cores in high latitude regions, and the studies in low latitude regions, particularily tropical regions, are sparse. Several recent investigations indicate that tap water largely represent the local average precipitation and can be utilized as a precipitation proxy. We have collected tap waters from Southeast Asian countries, including Malaysia, the Philippines, Vietnam, Indonesia, Laos, Cambodia, Thailand and Myanmar. In this study, we will analyze stable isotopes of regional tap waters, and examine their spatial variation, particularly 17Oexcess. We will investigate what control spatial variations in stable isotopes. Our studies will contribute to our knowledge about17Oexcess of the meteoric water in low latitude regions.- Publication:
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AGU Fall Meeting Abstracts
- Pub Date:
- December 2019
- Bibcode:
- 2019AGUFMPP23E1684H
- Keywords:
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- 3344 Paleoclimatology;
- ATMOSPHERIC PROCESSES;
- 1041 Stable isotope geochemistry;
- GEOCHEMISTRY;
- 1655 Water cycles;
- GLOBAL CHANGE;
- 1833 Hydroclimatology;
- HYDROLOGY