Hydroclimate Variability in the Mainland Southeast Asia During the Last Glacial Maximum
Bibliographic Data
| ID | 7936792 |
|---|---|
| Authors | Akkaneewut Jirapinyakul (0000-0002-1167-8912), Dissaya Sukaudom, Chawalit Charoenpong (0000-0001-6067-307X), Penjai Sompongchaikul, Paramita Punwong (0000-0001-5828-2950), Kweku Afrifa Yamoah (0000-0001-7488-0459) |
| Year | 2025 |
| Volume | 11 |
| Pages | 9 |
| Publication date | 2025-07-28 |
| Peer Reviewed | Yes |
| Open Access | Yes |
| Type | ARTICLE |
| Venue | Open Quaternary (JOURNAL) |
| Journal identifiers | ISSN: 2055-298X • E-ISSN: 2055-298X |
| Publisher | Ubiquity Press, Ltd. (PUBLISHER) |
| DOI | 10.5334/oq.154 |
| OpenAlex | W4412692758 |
| Language | EN |
| References cited | 78 |
The Last Glacial Maximum (LGM) is a key reference point for understanding past climate, but its complexity can lead to ambiguities in scope and interpretation. In this study, we applied a suite of geochemical techniques -XRF, grain size, and pollen analysis- to a well-dated sedimentary sequence from the lower central plain of Thailand. Our results show a gradual increase in fluvial runoff and precipitation from 26.5 to 24.6 cal ka BP, followed by reduced discharge around 24.6–24.1 cal ka BP, correlating with Heinrich event 2. A subsequent decline in runoff until 23 cal ka BP was followed by a distinct increased precipitation between 23–22.8 cal ka BP, with an abrupt shift to drier conditions post 22.8 cal ka BP. Comparing our records with other paleo records from the Sundaland imply that the Intertropical Convergence Zone (ITCZ) did not shift significantly north during the LGM. Instead, we suggest an ENSO-like phenomenon modulated tropical rainfall during the LGM as a result of the exposed Sunda Shelf, which enhanced precipitation and created a climate similar to the present tropical wet-dry or savanna climate, with pronounced seasonality. Our results highlight the complexities associated with tropical climate variability, challenging the conventional uniformity of cool and dry conditions during the LGM
Ancient history · Archaeology · Climatology · Geography · Glacial period · Last Glacial Maximum · Mainland · Physical geography · Southeast asia · Geology and Paleoclimatology Research · History · Landslides and related hazards · Pleistocene-Era Hominins and Archaeology · Geology · Paleontology
The East Asian Monsoon During MIS 2 Expressed in a Speleothem δ 18 O Record From Jintanwan Cave, Hunan, China
Heinrich events
Updated world map of the Köppen-Geiger climate classification
Gradistat
Influence of the intertropical convergence zone on the East Asian monsoon
The Last Glacial Maximum
Asynchronous Holocene optimum of the East Asian monsoon
Monsoons
Palaeoenvironments of insular Southeast Asia during the Last Glacial Period
High‐resolution X‐ray fluorescence core scanning analysis of Les Echets (France) sedimentary sequence
Loss on ignition as a method for estimating organic and carbonate content in sediments
Mangrove dynamics and environmental changes on Koh Chang, Thailand during the last millennium
Vegetation changes from the late Pleistocene through the Holocene from three areas of archaeological significance in Thailand
Environmental changes on the west coast of the Gulf of Thailand during the 8.2 ka event
Enso may have contributed to sea level changes in the Gulf of Thailand during the Late-Holocene
Microfossil evidence of land-use intensification in north Thailand
Discussion Reporting of 14 C Data
The IntCal20 Northern Hemisphere Radiocarbon Age Calibration Curve (0–55 cal kBP)
| Citation velocity | historical |
|---|---|
| Highly cited | No |