New model of reef-island evolution: Maldives, Indian Ocean

Kench, Paul S.; McLean, Roger; Nichol, Scott L.

doi:10.1130/g21066.1

Cited by 170 publications

(160 citation statements)

References 10 publications

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“…These results have been confirmed by Kench and Brander [5] to be consistent with the mean long term trend in the wind climate in the central region of the Maldives.…”

Section: Survey Data Entry and Error Calculations For Traversesupporting

confidence: 79%

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Shoreline Instability Study on Fun Island Resorts, Maldives

K.¹,

Thoufeeg²,

Deepak³

2012

JEP

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Shoreline changes induced by erosion and accretion are natural processes that take place over a range of time scales. They may occur in response to smaller-scale events, such as storms, regular wave action, tides and winds, or in response to large-scale events such as glaciation that significantly alter sea levels (rise/fall) and tectonic activities that cause coastal land subsidence or emergence. Environmental related issues are one of the major problems which the native islanders of the Maldives are facing throughout the history. The global warming and sea level rise have been a threat for the people of these islands. The scope of this paper is to find the shoreline instability of the coastal area along Fun Island Resort Maldives and aim is to find the abrasion, erosion on the coastal area of the island throughout the monsoon season. The coastal structures adopted as a protection against erosion has been damaged due to the 2004 Tsunami and the groynes are still to be repaired. A map was generated with the data collected on the topographic survey which shows that the maximum height of the vegetation line was found to be just +2.15 m above Mean Sea Level (MSL). Beach profiles around the island were taken to access the damage to the shoreline of the island.

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“…These results have been confirmed by Kench and Brander [5] to be consistent with the mean long term trend in the wind climate in the central region of the Maldives.…”

Section: Survey Data Entry and Error Calculations For Traversesupporting

confidence: 79%

“…Fun Island Resort (FIR) (Bodufinolhu) is a 100 room three star resort located on the South Eastern corner of South Male' Atoll [1][2][3][4][5][6]. Villa Shipping and Trading Company [7] further reported that the reef on FIR exists has an area of about 16 km 2 and it is large compared to average Maldivian reefs.…”

Section: Study Area-fun Island Resort (Fir)mentioning

confidence: 99%

Shoreline Instability Study on Fun Island Resorts, Maldives

K.¹,

Thoufeeg²,

Deepak³

2012

JEP

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“…Indian Ocean reef platforms and the islands they support have stabilized in their current configuration as Holocene sea levels have slowly risen over the past 6000 years [4][5][6]. However, their response to more recent climatic changes such as accelerated sea level rise, coral bleaching and increased intensity of storms has shown great variability across different localities.…”

Section: Introductionmentioning

confidence: 99%

A Geospatial Appraisal of Ecological and Geomorphic Change on Diego Garcia Atoll, Chagos Islands (British Indian OceanTerritory)

Hamylton

East

2012

Remote Sensing

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This study compiled a wide range of modern and historic geospatial datasets to examine ecological and geomorphic change at Diego Garcia Atoll across a 38-year period . This remarkable collection of spatially referenced information offered an opportunity to advance our understanding of the nature and extent of environmental change that has taken place with the construction of the military airbase at Diego Garcia. Changes assessed included movements of the lagoon rim shorelines, changes in the terrestrial vegetation on the lagoon rim and amendments to the bathymetry of the lagoon basin through dredging activities. Data compiled included detailed shoreline and vegetation maps produced as part of the H.M.S. Vidal Indian Ocean Expedition (1967), three Ikonos satellite images acquired in 2005 that collectively covered the complete Atoll area, a ground truthing field dataset collected in the northern section of the lagoon for the purpose of seafloor mapping (2005), observational evidence of shoreline erosion including photographs and descriptions of seawater inundations and bathymetric soundings from five independent surveys of the lagoon floor (1967, 1985, 1987, 1988 and 1997). Results indicated that much of the change along the lagoon rim is associated with the expansion of the inner lagoon shoreline as a result of the construction of the military airbase, with an estimated increase in land area of 3.01 km 2 in this portion of the atoll rim. the lagoon, particularly in the vicinity of the Main Passage. As no previous record of benthic character exists, a complete benthic habitat map of the atoll was derived through classification of the three IKONOS satellite images. Management implications arising from this overall appraisal of geomorphic and ecological change at Diego Garcia included the need for ongoing monitoring of shoreline change at a representative set of sites around the atoll rim, monitoring of the water flow regime through the northern channels between the open ocean and the lagoon basin and an ongoing mapping campaign to record periodic changes in the character of the benthic surface ecology.

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“…Recent studies suggest that island initiation and development is more complex. Islands have been shown to form under both rising and falling sea-level conditions, and across substrates of varied elevation and composition (Woodroffe et al, 1999;Kench et al, 2005). Notably, these studies also highlight that island formation is dependent on the relationship between sea level and reef platform development and not just one of these variables.…”

Section: The Role Of Sea Level and Reef Development In Island Formationmentioning

confidence: 82%

Reef Island Evolution and Dynamics: Insights from the Indian and Pacific Oceans and Perspectives for the Spermonde Archipelago

Kench

Mann

2017

Front. Mar. Sci.

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Along southwestern Sulawesi, Indonesia, the Spermonde Archipelago comprises some 120 islands of variable size and degree of anthropogenic modification. Comparable to adjacent areas in Southeast Asia, the Spermonde Archipelago is characterized by the congregation of a naturally high marine biodiversity and, at the same time, a high population density influencing the surrounding environmental conditions. As a consequence, during the last decades, research projects that have been carried out in the Spermonde mainly focused on social, ecological, political and economic interactions. However, geological and geomorphological aspects of the coral reef islands are less well understood and there have been few studies undertaken since the pioneering work of Umbgrove, Kuenen, and Verstappen in the Indonesian archipelago in the early to mid-twentieth century. Here we review the existing studies, with a focus on the Spermonde Archipelago, and reconcile them with more recent works on reef island evolution and dynamics from the Indian and Pacific Oceans. This synthesis shows that reef islands in the Spermonde Archipelago are well suited for geomorphological investigations, and provides perspectives for future reef island research in that area that will have global interest. We identify four research priorities: (1) To identify the timing and chronology of island formation; (2) Improved understanding of carbonate budgets and sediment generation that contribute to island building; (3) Document morphological changes in reef islands at seasonal to decadal timescales, and; (4) Quantify the process regime that drives sediment transport and island change with particular focus on the role of different monsoon seasons.

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New model of reef-island evolution: Maldives, Indian Ocean

Cited by 170 publications

References 10 publications

Shoreline Instability Study on Fun Island Resorts, Maldives

Shoreline Instability Study on Fun Island Resorts, Maldives

A Geospatial Appraisal of Ecological and Geomorphic Change on Diego Garcia Atoll, Chagos Islands (British Indian OceanTerritory)

Reef Island Evolution and Dynamics: Insights from the Indian and Pacific Oceans and Perspectives for the Spermonde Archipelago

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