Deep sea challenges of marine technology and oceanographie engineering

Clauss, Günther F.; Hoog, Sven

doi:10.1016/s0928-2009(02)80016-6

Cited by 7 publications

(6 citation statements)

References 4 publications

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“…that needs now to be followed by a real application in areas of the continental shelf in order to corroborate the long-term survival success predicted by the present results. Furthermore, the limited sample size, arising from the difficulties of working at depths (Clauss & Hoog, 2002), results in model predictions with large margin errors constraining broader conclusions of this study. These limitations will be assessed and reduced based on future monitoring of gorgonians transplanted on the continental shelf; the success of ecological restoration, however, should only be generally demonstrable within 10-50 years (Jackson, Lopoukhine, & Hillyard, 1995;Suding, 2011).…”

Section: Discussionmentioning

confidence: 82%

“…Only a few restoration attempts have been carried out in the deep sea, specifically targeting cold-water coral species (70-1300 m depth, Boch et al, 2019;Brooke, Koenig, & Shepard, 2006;Dahl, 2013) and coral gardens on the Mediterranean continental shelf (60-120 m depth, Montseny et al, 2019). High survival values of coral and gorgonian transplants were found in these studies, highlighting the feasibility of active restoration of cold-water coral reefs and coral gardens, despite the considerable limitations associated with the difficulties of working at intermediate and deep depths (Clauss & Hoog, 2002).…”

mentioning

confidence: 74%

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A new large‐scale and cost‐effective restoration method for cold‐water coral gardens

Montseny

Linares

Viladrich

et al. 2020

Aquatic Conservation

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1. Gorgonians dwelling on the Mediterranean continental shelf are among the most frequent fishing bycatch taxa. These species display several traits, such as long lifespans and slow growth, which make them very vulnerable to the impacts caused by fishing activities with far-reaching and long-lasting effects. 2. Hence, restoration and mitigation actions are crucial to enhance and speed up the natural recovery of damaged cold-water coral gardens. Given the growing concern to develop effective and affordable restoration actions, the present study aims to propose and technically validate a new large-scale and cost-effective restoration method. 3. This technique, named 'badminton method', consists of attaching bycatch Eunicella cavolini colonies to cobble supports and returning them to the continental shelf by gently throwing the gorgonian transplants directly from a boat. 4. Two consecutive field experiments were conducted in order to find the best cobble type support and gorgonian size to be used: first, to evaluate the landing efficiency of gorgonian transplants at different depths (from 5 to 30 m) and second, to evaluate their capability to maintain a correct position over time. 5. Natural cobbles with large gorgonians attached were the best option. Field results and modelling approaches suggest that the transplants would correctly land on the continental shelf seabed in a predicted area of around 60 m 2. Moreover, they would successfully maintain an upright position ensuring gorgonian survival over time. 6. The success of this method highlights the feasibility of large-scale and low-cost restoration actions with promising results for the conservation and recovery of cold-water coral gardens.

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Section: Discussionmentioning

confidence: 82%

mentioning

confidence: 74%

A new large‐scale and cost‐effective restoration method for cold‐water coral gardens

Montseny

Linares

Viladrich

et al. 2020

Aquatic Conservation

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“…The main outcomes of the feasibility studies ABEL and DESIBEL were the Victor 6000 ROV of IFREMER, and a special ROV able to deploy and recovery heavy payloads on the deep seafloor. This ROV, called MODUS, was built as part of the GEOSTAR projects (Clauss and Hoog, 2002;Clauss et al, 2004).…”

Section: Europementioning

confidence: 99%

“…Near-realtime communication with the observatory on the seafloor is assured by a surface buoy able to link by acoustics with the Bottom Station, and by radio/satellite links with an on-shore station. Details of the GEOSTAR sub-systems and characteristics of the sensors used can be found in Clauss and Hoog (2002), Gasparoni et al (2002), Marvaldi et al (2002), Clauss et al (2004) and Favali et al (2006). Figure 9a-d shows all the GEOSTAR sub-systems.…”

Section: Europementioning

confidence: 99%

Seafloor Observatory Science: a Review

Favali

Beranzoli

2009

Annals of Geophysics

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The ocean exerts a pervasive influence on Earth's environment. It is therefore important that we learn how this system operates (NRC, 1998b;. For example, the ocean is an important regulator of climate change (e.g., IPCC, 1995). Understanding the link between natural and anthropogenic climate change and ocean circulation is essential for predicting the magnitude and impact of future changes in Earth's climate. Understanding the ocean, and the complex physical, biological, chemical, and geological systems operating within it, should be an important goal for the opening decades of the 21st century. Another fundamental reason for increasing our understanding of ocean systems is that the global economy is highly dependent on the ocean (e.g., for tourism, fisheries, hydrocarbons, and mineral resources) (Summerhayes, 1996). The establishment of a global network of seafloor observatories will help to provide the means to accomplish this goal. These observatories will have power and communication capabilities and will provide support for spatially distributed sensing systems and mobile platforms. Sensors and instruments will potentially collect data from above the air-sea interface to below the seafloor. Seafloor observatories will also be a powerful complement to satellite measurement systems by providing the ability to collect vertically distributed measurements within the water column for use with the spatial measurements acquired by satellites while also providing the capability to calibrate remotely sensed satellite measurements (NRC, 2000). Ocean observatory science has already had major successes. For example the TAO array has enabled the detection, understanding and prediction of El Niño events (e.g., Fujimoto et al., 2003). This paper is a world-wide review of the new emerging «Seafloor Observatory Science», and describes both the scientific motivations for seafloor observatories and the technical solutions applied to their architecture. A description of world-wide past and ongoing experiments, as well as concepts presently under study, is also given, with particular attention to European projects and to the Italian contribution. Finally, there is a discussion on «Seafloor Observatory Science» perspectives.

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“…MODUS, a simplified ROV, is the special vehicle for the deployment/recovery procedures (Clauss and Hoog, 2002;Clauss et al, 2004;Gerber and Clauss, 2005). MODUS is remotely controlled from the ship through a dedicated electro-opto-mechanical cable.…”

Section: Modusmentioning

confidence: 99%

A fleet of multiparameter observatories for geophysical and environmental monitoring at seafloor

Favali

Beranzoli

D’Anna

et al. 2009

Annals of Geophysics

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Seafloor long-term, multiparameter, single-frame observatories have been developed within the framework of European Commission and Italian projects since 1995. A fleet of five seafloor observatories, built-up starting from 1995 within the framework of an effective synergy among research institutes and industries, have carried out a series of long-term sea experiments. The observatories are able to operate from shallow waters to deep-sea, down to 4000 m w.d., and to simultaneously monitor a broad spectrum of geophysical and environmental processes, including seismicity, geomagnetic field variations, water temperature, pressure, salinity, chemistry, currents, and gas occurrence. Moreover, they can transmit data in (near)-real-time that can be integrated with those of the on-land networks. The architecture of the seafloor observatories follows the criteria of modularity, interoperability and standardisation in terms of materials, components and communication protocols. This paper describes the technical features of the observatories, their experiments and data.

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Deep sea challenges of marine technology and oceanographie engineering

Cited by 7 publications

References 4 publications

A new large‐scale and cost‐effective restoration method for cold‐water coral gardens

A new large‐scale and cost‐effective restoration method for cold‐water coral gardens

Seafloor Observatory Science: a Review

A fleet of multiparameter observatories for geophysical and environmental monitoring at seafloor

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