Monitoring of a Multi Functional Submerged Geotextile Reef Breakwater

Jackson, LA; Tomlinson, Rodger Benson; McGrath, John; Turner, Ian L.

doi:10.1142/9789812791306_0162

Cited by 8 publications

(9 citation statements)

References 2 publications

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“…Interestingly, a decreased rate of shoreline recession was indicated directly in the lee of the structure during erosion events, when compared to the adjacent shoreline. Although it is not clearly evident in the data presented, Jackson et al (2002) also stated that a salient was persistent in the lee of the structure. However, there is no discussion on the evolution of the salient nor its size.…”

Section: Multi-functional Structuresmentioning

confidence: 75%

“…The performance monitoring of the multi-functional artificial surfing reef located on the Gold Coast, Australia was reported by Jackson et al (2002). The shoreline at the study area is oriented north -south, with a net longshore sediment transport in the study area of the order of 500,000 m 3 /year towards the north.…”

Section: Multi-functional Structuresmentioning

confidence: 99%

“…Understandably, a multifunctional design which provides the dual benefits of beach protection and surfable waves, while not impairing beach aesthetics or amenity, has wide community appeal. The recently completed artificial surfing reef at the Gold Coast in Australia is an example of such a multi-functional design (Black and Mead, 2001;Jackson et al, 2002).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Shoreline response to submerged structures: A review

Ranasinghe

Turner

2006

Coastal Engineering

153

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Section: Multi-functional Structuresmentioning

confidence: 75%

Section: Multi-functional Structuresmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Shoreline response to submerged structures: A review

Ranasinghe

Turner

2006

Coastal Engineering

153

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“…The overall performance of the reef has been presented previously by Jackson et al (2003), , Jackson, Reichelt et al (2005), and Jackson et al (2007). In addition there have been regular six-monthly reports on the impact of the reef on the adjacent shoreline, for example: Blacka et al (2007) and Strauss et al (2012).…”

Section: Monitoring Programmentioning

confidence: 90%

Long Term Performance of a Submerged Coastal Control Structure: A Case Study of the Narrowneck Multi-Functional Artificial Reef

Jackson

Tomlinson

Corbett³

et al. 2012

Int. Conf. Coastal. Eng.

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In response to the increasing occurrences of beach erosion along Surfers Paradise and Main Beaches -Gold Coast, Australia, the Northern Gold Coast Beach Protection Strategy [NGCBPS] was developed to widen the beach by 20-30m as well as improving surfing conditions as a secondary objective. The strategy, implemented in 1999-2000, involved large-scale beach nourishment and construction of a submerged breakwater "reef" to act as a control point at Narrowneck. Construction of the reef involved innovative filling and placement methods using very large sand filled geotextile containers coupled with significant advances with regards to design of the geotextile material and containers. In the 11 years since construction, there has been substantial monitoring of the project since its completion in late 2000 including: -video imaging using webcams; hydrographic and beach surveys; aerial and oblique photography; surf and surf safety observations and GPS surfing track plots; and geotextile container condition and stability. This paper presents an update on the performance of the reef over the last four years. In particular, the response of the structure and the shoreline to a series of major storm events in 2009 has been examined. The results have shown that the erosion caused by these major events was accommodated within the wider beach created in 1999. Over the next 2 years there was a gradual recovery in the lee of the reef with a subtle groyne effect resulting in an even larger increase in the width of the updrift beach. A detailed underwater condition survey was also undertaken in 2011, to determine changes in the condition of the geotextile containers. This revealed a number of containers missing or damaged, and that seaward containers were covered by sand. The marine habitat which has been a feature of the reef has been impacted by the increased coverage of sand, but still shows high abundance and biodiversity.

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“…When a submerged structure has these several functions it is called a multifunctional artificial reef (hereafter MFAR). An example is the Narrowneck reef at the Gold Coast in Australia (Black and Mead 2001;Jackson et al 2002Jackson et al , 2004.…”

Section: General Backgroundmentioning

confidence: 99%

Enhancing submerged coastal constructions by incorporating multifunctional purposes

2011

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Surfing has becoming more and more attractive in the past few decades, constituting nowadays an important source of revenue for many countries with extensive coastlines. For this purpose and also for environmental reasons, the conventional ways of protecting a coastline appear to entail some disadvantages. An innovative and interesting way of improving surfing capacities and contributing to protect a local coastal zone is by means of multifunctional artificial reefs. A multifunctional artificial reef (MFAR) is a submerged structure that serves several purposes; in particular, it may enhance the surfing possibilities and the environmental value of the local area. This structure has some promising new aspects, too: first, it provides an unimpaired visual amenity; second, it offers tourist and economic benefits by improving the surfing conditions; third, it can enhance the environmental value of the area where it is built, and fourth, if designed properly, the down drift erosion can be minimal. An appropriate reef design in terms of 'surfability', i.e. the possibility to surf a wave, for the Leirosa beach, located to the south of Figueira da Foz, midway along Portugal's West Atlantic coast, has been investigated. In order to achieve the best design several steps were conducted. First, the performance of the Boussinesq-type COULWAVE model is tested with experimental data. Next, this numerical model is used to define the best values for three design parameters: reef angle; geometry of the reef (without or with a platform), and horizontal dimensions for the appropriate geometry. A preliminary design was achieved step by step, making use of the theory and of the state of the art of multifunctional reefs. This reef geometry is used in the numerical study. In terms of 'surfability' and for the conditions of the local coastline of Leirosa, the following values were found for the main parameters: a reef angle of 66°; a structure height of 3.20 m; a reef geometry composed of a delta without a platform; a reef submergence of 1.50 m, and a structure seaward slope of 1:10.

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Monitoring of a Multi Functional Submerged Geotextile Reef Breakwater

Cited by 8 publications

References 2 publications

Shoreline response to submerged structures: A review

Shoreline response to submerged structures: A review

Long Term Performance of a Submerged Coastal Control Structure: A Case Study of the Narrowneck Multi-Functional Artificial Reef

Enhancing submerged coastal constructions by incorporating multifunctional purposes

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