Past monsoon rainfall variations in peninsular India recorded in a 331-year-old speleothem
Bibliographic Data
| ID | 12267048 |
|---|---|
| Authors | M G Yadava (Physical Research Laboratory, corresponding author), R Ramesh (0000-0003-2471-7746, Physical Research Laboratory), G B Pant (Indian Institute of Tropical Meteorology), Ganesh Pant (0000-0002-1463-9273, Indian Institute of Tropical Meteorology) |
| Year | 2004 |
| Volume | 14 |
| Issue | 4 |
| Pages | 517-524 |
| Publication date | 2004-05-01 |
| Peer Reviewed | Yes |
| Open Access | Yes |
| Type | ARTICLE |
| Venue | The Holocene (JOURNAL) |
| Journal identifiers | ISSN: 0959-6836 • E-ISSN: 1477-0911 |
| Publisher | SAGE Publishing (PUBLISHER • US) |
| DOI | 10.1191/0959683604hl728rp |
| OpenAlex | W2023505793 |
| Language | EN |
| Citations received | 16 |
| References cited | 22 |
An actively growing stalagmite collected from a cave located in the hills of the Western Ghats in the Uttar Kannada District of Karnataka, India, has been studied for stable isotope ratios of oxygen and carbon, width of growth layers and grey-level changes. Distinct carbonate layers, alternate coarse and compact, are seen in cross-section. Each couplet of compact and coarse layer is found to represent a single year. A total of 331 such couplets has been counted, indicating that the stalagmite started growing in AD 1666 and continued until it was sampled. Stable isotope ratios of oxygen (δ 18 O) and carbon (δ 13 C) show variations ranging from-13.6 to-7.9%° and from-2.7 to 1.6%°, respectively. We have reconstructed past rainfall changes of the cave site using the‘amount effect’ in &δ 18 O of rain. Speleothemδ 18 O and instrumental rainfall data from the associated climate subdivision show a significant correlation (r =-0.62, decadal average). Several sharp spikes of enrichment and depletion in 18 O are indicative of the past deficiency and excess in rainfall. Most of the severe drought years recorded independently by meteorological observations are found registered in the stalagmite layers. During the 331-year-period, rainfall was highest at Añ 1666 and lowest around AD 1900. The stalagmite-generated past rainfall record can serve as a reasonable proxy for testing monsoon models
Cave · Climatology · Geochemistry · Geography · Holocene · Isotopes of carbon · Isotopes of oxygen · Monsoon · Physical geography · Speleothem · Stable isotope ratio · Stalagmite · Subtropics · Total organic carbon · δ13C · δ18O · Geology and Paleoclimatology Research · Groundwater and Isotope Geochemistry · Karst Systems and Hydrogeology · Ecology · Geology · Oceanography
Holocene ITCZ and Indian monsoon dynamics recorded in stalagmites from Oman and Yemen (Socotra)
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Stable isotopes in precipitation
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The isotopic geochemistry of speleothems—I. The calculation of the effects of different modes of formation on the isotopic composition of speleothems and their applicability as palaeoclimatic indicators
Stable isotopes in precipitation
Strong coherence between solar variability and the monsoon in Oman between 9 and 6 kyr ago
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| Unique citing works | 16 |
|---|---|
| Citations per year | 0.84 |
| Citation span | 2007 - 2025 (19) |
| Citation velocity | recent |
| Highly cited | No |
| Citation types | Neutral: 16 |