Regional-scale climate influences on temporal variations of rainwater and cave dripwater oxygen isotopes in northern Borneo

Cobb, Kim M.; Adkins, Jess F.; Partin, J. W.; Clark, Brian R.

doi:10.1016/j.epsl.2007.08.024

Cited by 126 publications

(118 citation statements)

References 53 publications

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“…Studies on the amount effect in the IMC showed that it occurred because of the fractionation process that occurs across large regions and long time periods (Cobb et al, 2007;Risi et al, 2008;Kurita et al, 2009Kurita et al, , 2011Moerman et al, 2013;Suwarman et al, 2013). In addition, although the amount effect was observed at a shorter timescale in tropical regions (Risi et al, 2008), isotopic content in precipitation was not correlated well with the amount of precipitation in short timescales (Risi et al 2008;Kurita et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Observational Research on Stable Isotopes in Precipitation over Indonesian Maritime Continent

Belgaman

Ichiyanagi

Tanoue

et al. 2016

Nihon Suimon Kagaku Kaishi

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The Indonesian Maritime Continent (IMC) is located in the tropics and consists of a number of islands and seas. This particular arrangement of land masses and seas produces unique weather and climate characteristics. Various hydrometeorology studies have been conducted exploring the variability of stable isotopes in precipitation over the IMC. Stable isotopes (δ 18 O and δD) in precipitation can be used to obtain information about atmospheric processes (e.g., precipitation, temperature and hydrological cycle). The Global Network of Isotopes in Precipitation, operated by the International Atomic Energy Agency, has been conducting worldwide monthly surveys of isotope levels in precipitation since 1961. To better understand the isotopic variability in the IMC, the Japan Agency for Marine-Earth Science and Technology began operating in the IMC region in 2001. There are three types of seasonal variation of stable isotopes in precipitation, depending on the level of precipitation amount and also stable isotopic value, namely, semiannual, anti-monsoonal and monsoonal. Negative correlations between the precipitation amount and stable isotope value (amount effect) were identified when using the monthly averages. The interannual variability of stable isotopes in precipitation was mainly because of El Niño Southern Oscillation activity, whereas intraseasonal variability was closely related to the Madden-Julian Oscillation. Stable isotope variability in short periods was found to be due to precipitation cloud types and post-condensation processes.

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Section: Introductionmentioning

confidence: 99%

Observational Research on Stable Isotopes in Precipitation over Indonesian Maritime Continent

Belgaman

Ichiyanagi

Tanoue

et al. 2016

Nihon Suimon Kagaku Kaishi

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“…To be more specific, positive correlation has been observed between SE Asia rainfall anomalies (SEAR) and ENSO evolution, where precipitation patterns are found to be highly affected by the irregular ENSO-related sea surface temperature (SST) anomalies (Juneng & Tangang 2005). The same climatic signals were captured further by Cobb et al (2007) with lighter isotope of δ 18 O (1 to 2 ‰) from cave dripwater sample in Gunung Mulu, Sarawak during the weak La Niña in 2005/2006. The event was found associated with precipitation anomalies in Mulu Cave, Sarawak (Cobb et al 2007).…”

Section: Precipitation Anomalies-enso Eventmentioning

confidence: 68%

“…The same climatic signals were captured further by Cobb et al (2007) with lighter isotope of δ 18 O (1 to 2 ‰) from cave dripwater sample in Gunung Mulu, Sarawak during the weak La Niña in 2005/2006. The event was found associated with precipitation anomalies in Mulu Cave, Sarawak (Cobb et al 2007). Therefore, by these climatic evidences, there is a high possibility that seasonal water quality and aquatic insect's variations in LKR has been affected by the similar irregular events.…”

Section: Precipitation Anomalies-enso Eventmentioning

confidence: 99%

Water Quality and Aquatic Insects Study at the Lower Kinabatangan River Catchment, Sabah: In Response to Weak La Niña Event

Harun¹,

Al‐Shami²,

Dambul³

et al. 2015

JSM

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“…Studies on the amount effect in the IMC have shown that it happens because of a fractionation process that occurs across large regions and over extended periods of time (e.g. Cobb et al, 2007;Risi et al, 2008;Kurita et al, 2009Kurita et al, , 2011. The isotopic signal in precipitation is influenced by a combination of factors, such as precipitation amount, temperature, vapor source, and atmospheric circulation (Vuille et al, 2003).…”

Section: Introductionmentioning

confidence: 99%

Characteristics of seasonal precipitation isotope variability in Indonesia

Belgaman

Ichiyanagi

Suwarman

et al. 2017

Hydrological Research Letters

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Abstract:The few previous studies of precipitation isotopes (δ 18 O and δD) in Indonesia, based on low spatial resolution observation datasets, have found several types of patterns in their seasonal variabilities. This study conducted high spatial resolution rainfall sampling and investigated the temporal characteristics of precipitation isotope in Indonesia. Rainfall samples were collected weekly from 33 stations in Indonesia. Cluster analysis showed that Indonesia could be divided into four types based on the seasonal variability of the precipitation of δ 18

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Regional-scale climate influences on temporal variations of rainwater and cave dripwater oxygen isotopes in northern Borneo

Cited by 126 publications

References 53 publications

Observational Research on Stable Isotopes in Precipitation over Indonesian Maritime Continent

Observational Research on Stable Isotopes in Precipitation over Indonesian Maritime Continent

Water Quality and Aquatic Insects Study at the Lower Kinabatangan River Catchment, Sabah: In Response to Weak La Niña Event

Characteristics of seasonal precipitation isotope variability in Indonesia

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