The formation and evolution of the barrier islands of Inhaca and Bazaruto, Mozambique

Armitage, Simon; Botha, G.A.; Duller, G.A.T.; Wintle, A.G.; Rebelo, Luís; Momade, Fátima

doi:10.1016/j.geomorph.2006.05.011

Cited by 58 publications

(59 citation statements)

References 36 publications

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“…Remnant eolianite ridges that were emplaced during interstadial periods of OIS 5, when the sea sat at intermediate levels, have been reported on carbonate continental shelves in southeastern Australia (Gardner et al 2006), South Africa (Ramsay 1994, Bateman et al 2004 and Mozambique (Armitage et al 2006). Modelling of shelf relief, similar to the approach adopted here with the Rottnest Shelf, could show whether these features form extensive reefs and identify any remnant barriers that may have been deposited during the lower sea level in OIS 3 and the broader significance of this Late Quaternary period of coastal sedimentation.…”

mentioning

confidence: 92%

Broad-scale geomorphology and benthic habitats of the Perth coastal plain and Rottnest Shelf, Western Australia, identified in a merged topographic and bathymetric digital relief model

Brooke

Creasey

Sexton

2010

International Journal of Remote Sensing

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A digital relief model (DRM) of the Swan Coastal Plain and Rottnest Shelf (7400 km 2 ) was built with a range of topographic and high-resolution bathymetric datasets, gridded to a 50 m cell size. The DRM enabled the delineation of relict coastal landforms, benthic habitats and development of a regional morphostratigraphic framework. Well-defined features include: (1) limestone ridges on the coastal plain that sit subparallel to the modern shoreline and were largely formed as coastal dune barriers during or shortly after Quaternary interglacial periods of high sea level; (2) rocky reefs on the inner shelf that rise up to 10 m above the adjacent seafloor, which are remnants of coastal dune barriers that formed when the sea level was 20-30 m lower than present and (3) a discontinuous ridge 3-10 m high along much of the outer shelf, which likely represents a coastal barrier that formed when the sea level was around 60 m lower than present. The DRM provides a useful regional perspective of the distribution and form of these extensive reefs.

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mentioning

confidence: 92%

Broad-scale geomorphology and benthic habitats of the Perth coastal plain and Rottnest Shelf, Western Australia, identified in a merged topographic and bathymetric digital relief model

Brooke

Creasey

Sexton

2010

International Journal of Remote Sensing

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“…The mangrove surrounding the estuary is an indication of the low dynamic of the estuary. A possible mechanism for reworking the shore is the presence of tidal currents in the estuary given the ~3 m of mean spring tidal range reported by Armitage et al [2]. The tidal currents are probably responsible for the distribution of sediments in western side of the spit as seen from 1984-1989 ( fig.…”

Section: Resultsmentioning

confidence: 90%

“…Pomene is part of the coastal plain of Mozambique, which shows evolution related to fluctuation of sea level during the Pleistocene and Holocene, Armitage et al [2]. Coastal parabolic dunes, sand beach, estuary and mangrove compose the study area.…”

Section: Study Areamentioning

confidence: 99%

“…It is a sand beach feature that extends towards southeast exposed to wind, forming small dunes. The mean spring tidal range is ~3 m Armitage et al [2]. The beach is opened to waves of high energy.…”

Section: Study Areamentioning

confidence: 99%

“…However, Cooper and Pilkey [1] and Armitage et al [2] studied coastal processes and evolution of barrier islands of southern Mozambique, pointing out to the Pleistocene spit progradation and dune deposition during sea level highstand as the model of it evolution. Armitage et al [2] applied this evolution model to the Mozambican coastal plain. Chemane et al [3] report vulnerability of coastal resource due to climate change in Mozambique, calling for Integrated Coastal Zone Management (ICZM).…”

Section: Introductionmentioning

confidence: 99%

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Monitoring spit development in Pomene, southern Mozambique, using Landsat data

Massuanganhe

Arnberg

2008

WIT Transactions on the Built Environment

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Coastal dunes, estuary, mangrove, and sand beach outlining a spit characterize Pomene on the southern coast of Mozambique. The spit is of interest for tourists and susceptible to coastal processes. Thus, four Landsat TM/ETM+ images dated 1984, 1989, 2001 and 2007 were used to monitor the geomorphologic change as well as to find the pattern of spit development spatially and temporally. From each Landsat image we extracted land and water (outlining the spit) by grouping 30 spectral classes from unsupervised ISO DATA classification using red, nearinfrared (NIR) and short-wavelength infrared (SWIR) spectral bands. Geographic Information System (GIS) software was used to process and present the final maps. Cross-classification was carried out to show the spatial difference between the dates. The results show a growth of the spit towards NNW and erosion at the Indian Ocean side, suggesting a longshore drift process in this area. The spit is becoming narrow and threatening its shape in the short term. The longshore currents caused by prevailing SSE winds, and offshore winds, are the main causes of the spit development.

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The application of luminescence dating in sea‐level studies

Bateman

2015

Handbook of Sea‐Level Research

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The formation and evolution of the barrier islands of Inhaca and Bazaruto, Mozambique

Cited by 58 publications

References 36 publications

Broad-scale geomorphology and benthic habitats of the Perth coastal plain and Rottnest Shelf, Western Australia, identified in a merged topographic and bathymetric digital relief model

Broad-scale geomorphology and benthic habitats of the Perth coastal plain and Rottnest Shelf, Western Australia, identified in a merged topographic and bathymetric digital relief model

Monitoring spit development in Pomene, southern Mozambique, using Landsat data

The application of luminescence dating in sea‐level studies

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