Antecedent geological control on transgressive delta and shoreline preservation: Examples from the SE African shelf

Engelbrecht, Luke D.; Green, A.N.; Cooper, J. A. G.; MacKay, CF

doi:10.1016/j.margeo.2022.106934

Cited by 4 publications

(3 citation statements)

References 76 publications

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“…The reefs are commonly oriented approximately coast-parallel on the inner-to mid-shelf, representing submerged shorelines. 33,59 Abrupt changes in depth of the seabed, as observed on the outer edges of the reefs (Figure 2), are recognised as prominent zones of overstepped submerged shorelines. 33,59…”

Section: Resultsmentioning

confidence: 99%

“…33,59 Abrupt changes in depth of the seabed, as observed on the outer edges of the reefs (Figure 2), are recognised as prominent zones of overstepped submerged shorelines. 33,59…”

Section: Resultsmentioning

confidence: 99%

“…56 Further details of the shelf stratigraphy of the area have been documented by Hicks and Green 57 (and references therein). This MPA has not received much attention in terms of high-resolution MBES mapping despite encompassing an extensive subaqueous delta 58,59 and multiple reef complexes noted for high biodiversity 52 . Green et al 34 recently carried out an extensive MBES survey, providing new insights into higher-resolved geomorphology within the uThukela Banks MPA.…”

Section: Case Study: the Uthukela Banks Marine Protected Areamentioning

confidence: 99%

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The value of multibeam bathymetry in marine spatial planning in South Africa: A review

Wanda,

Wiles,

Cawthra

et al. 2023

S. Afr. J. Sci.

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Given a growing global population and shift to embrace the blue economy, a need for marine spatial planning (MSP) has emerged in South Africa to sustainably resolve the rising conflicts over the use of marine and seabed resources and services. A well-developed marine spatial plan yields numerous ecological, social and economic benefits. These are achieved through mediating between spatially conflicting economic drivers’ interests (e.g. commercial fishing, tourism, mining), preventing their activities from compromising thresholds of an environment’s sustainability. Within the MSP framework, high-resolution geospatial datasets are required to document and describe the seabed in the highest possible detail. At any scale, integrated analysis of seabed geomorphology and habitats is anticipated to greatly improve the understanding of ecosystem functioning from a multidisciplinary perspective, whilst improving MSP procedures and management of marine space. South Africa is the first of few African countries to have an approved and implemented MSP framework, but is still somewhat behind globally in implementing large-scale regional hydroacoustic surveys to cover the country’s vast offshore territory. The deficiency of hydroacoustic surveys is perhaps due to a relative lack of funds and poor communication about the value of multibeam echo-sounder (MBES) derived data, whilst marine geoscience remains a scarce skill in the country. This review paper presents a geological perspective of MSP and explores (1) the value that seabed mapping offers MSP specifically and (2) the need to increase seabed mapping with MBES, using a recently initiated project from the South African east coast as a case study.

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Section: Resultsmentioning

confidence: 99%

“…33,59 Abrupt changes in depth of the seabed, as observed on the outer edges of the reefs (Figure 2), are recognised as prominent zones of overstepped submerged shorelines. 33,59…”

Section: Resultsmentioning

confidence: 99%