Holocene sea level change on the southwest and south coasts of Sri Lanka

Katupotha, Jinadasa; Fujiwara, Kantaro

doi:10.1016/0031-0182(88)90039-9

Cited by 36 publications

(17 citation statements)

References 3 publications

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“…The 14 C dating of a peat samples collected from a depth of 3.2 m from the surface at 5.8 km inland in the coastal sequence of northern Kerala (12°10′N latitude) has shown that the area was under marine influence at~5.6 ka and the sea began to recede after this (Haneesh Kumar, 2001). Evidence of Holocene sea-level highstands reported by various studies from east coast of India and coasts of Sri Lanka (Bruckner, 1988;Katupotha, 1988;Katupotha and Fujiwara, 1988;Rajamanickam and Loveson, 1990;Banerjee, 2000;Farooqui and Vaz, 2000;GaitanVaz et al, 2008;Thomas, 2009) is summarized in Fig. 8 and the details of the sea-level indicators are given in Appendix I.…”

Section: Chronology Of Beach Ridges In Keralamentioning

confidence: 94%

Evidence of Late Holocene shoreline progradation in the coast of Kerala, South India obtained from OSL dating of palaeo-beach ridges

et al. 2015

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Section: Chronology Of Beach Ridges In Keralamentioning

confidence: 94%

Evidence of Late Holocene shoreline progradation in the coast of Kerala, South India obtained from OSL dating of palaeo-beach ridges

et al. 2015

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“…This large range indicates a combination of a slow rise in sea level and marginal subsidence, but data are insufficient to allow for quantification of the relative impacts. To illustrate ongoing oscillations in sea level, one study demonstrates that earlier Holocene sea levels on Sri Lanka were higher than at present by at least 0.5 m and as much as 1.0 m or more (Katupotha and Fujiwara 1988). Thus, one must be cautious when estimating sea-level change impacts for the region as a whole, as they will vary, in the shortterm, from place to place because of local geologic and oceanic parameters.…”

Section: Estimates Of Sea-level Risementioning

confidence: 94%

Potential coastal impacts of contemporary changing climate on South Asian seas states

Gable

Aubrey

1990

Environmental Management

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ABSTRACT/The threat of man-induced global change on the nations of the South Asian seas region varies from place to place because of differences in exposure to monsoons and storms, differences in local tectonics and subsidence, and variations in air and sea climates. Because several nations are involved, some having subsistence budgets, and given the cost of deriving independently a comprehensive response to global change, the similarities and differences between national settings must be identified soon. These comparisons will form the basis for local response strategies: the similarities provide a basis for responses similar to that of other nations and the differences provide for local adaptation. That climate change on the South Asian coastal region will have an impact is certain: its economics, environment, and coastal land uses are dominated to a certain extent by this marine influence. The extent of these impacts, however, is uncertain. Accompanying global change will be changes in sea level, differences in storm climate, and altered precipitation patterns; science cannot define today what pattern these changes will take. Because global change is inevitable--although its magnitude, timing, and geographic distribution are unknown--the South Asian seas region should begin the appropriate research and planning studies to set forth a reasoned response to global change, for implementation when scientific evidence for global change is more quantitative.

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“…Average temperature at both sites is 30°C during the dry season (November-January), falling to around 20°C in the wet season (May-September). The present setting of the coastal wetlands is a result of sea level changes during the Holocene period (Katupotha and Fujiwara 1988). The overburden cover in the area consists mainly of terrigenous sands, biogenic carbonates, and mud (Wijayananda 1994).…”

Section: Study Area and Physical Settingmentioning

confidence: 99%

“…This is possibly due to original lagoon peat and bog soils formed during the Holocene marine transgressions, with subsequent changes arising from variation in salinity produced by evaporation of lagoon water due to high temperatures, coupled with mixing with in situ sediments (Dahanayake 1982;Dissanayake 1984;Katupotha and Fujiwara 1988).…”

Section: Special Features Of the Sedimentsmentioning

confidence: 99%

Geochemistry of surface sediments in tsunami-affected Sri Lankan lagoons regarding environmental implications

Jayawardana

Ishiga

Pitawala

2011

Int. J. Environ. Sci. Technol.

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The December 26, 2004 Indian Ocean tsunami was one of the largest in human history, devastating the coastal wetlands of surrounding countries. This study present the chemical analyses of tsunamigenic and pretsunami sediments from Hikkaduwa and Hambantota lagoons in southern Sri Lanka, to assess their geochemical composition, their source, and subsequent environmental impacts. Principal component analysis of the tsunami sediments shows that 42% of the total variance is accounted for calcium oxide and Sr. That is, the tsunami deposits are rich in biogenic phases derived from shallow marine sediments. High organic matter contents of the tsunami sediments of up to 80 wt% also support this interpretation. The association of chlorine (\9.4 wt%), brome (\170 mg/kg), arsenic (\17 mg/kg), iron (III) oxide (\12.9 wt%) and sulfur (\7.6 wt%) accounts for 33% of the variance, reflecting higher salinity. This further suggests that the sediments were mainly derived from a marine environment, rather than from non-marine sands and/or soils. Immobile element contents and relations (thorium, scandium and zirconium) suggest that the tsunami sediment source was mostly felsic in composition, with some mafic component, and mixed with predominantly shallow marine shelf or slope sediments. Additional compositional variations in the tsunami sediments in both lagoons may be associated with variations of wave strength along the coast and by the morphology of the continental shelf. Lower elemental abundances in Hambantota lagoon sediments compared to Hikkaduwa equivalents may thus reflect a greater non-marine component in the former, and greater shelf sediment component in the latter.

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Holocene sea level change on the southwest and south coasts of Sri Lanka

Cited by 36 publications

References 3 publications

Evidence of Late Holocene shoreline progradation in the coast of Kerala, South India obtained from OSL dating of palaeo-beach ridges

Evidence of Late Holocene shoreline progradation in the coast of Kerala, South India obtained from OSL dating of palaeo-beach ridges

Potential coastal impacts of contemporary changing climate on South Asian seas states

Geochemistry of surface sediments in tsunami-affected Sri Lankan lagoons regarding environmental implications

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