Science et cartographie au Siècle des lumières

Pelletier, Monique

doi:10.4000/books.editionsbnf.1065

Cited by 2 publications

(7 citation statements)

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“…Of particular interest to this study is the 26 November 1999 M W = 7.5 Ambrym earthquake which occurred in the southern part of the central Vanuatu back arc thrust and generated (Pelletier et al, 2011). Insert shows land in grey and reef types as barrier reef (orange), fringing reef (yellow) and patch reef (pink) from the Reef Base database (http://www.reefbase.org).…”

Section: Tectonics Of the Southwest Pacificmentioning

confidence: 99%

“…The fringing reef (dark grey) is from the Reef Base database. The shaded high-resolution seafloor topography of the seaward reef wall is from the WALFUT survey (Pelletier et al, 2011). The low resolution bathymetry outside the reef wall is from the ALAUFI Cruise (Pelletier et al, 2001).…”

Section: Wallis and Futunamentioning

confidence: 99%

“…The location and physical parameters (length, width, depth, dip) of the earthquake fault-sources required to generate the tsunamis were derived from information obtained in the international literature, and interpretation of multibeam bathymetry data acquired during the March 2000 ALAUFI (Pelletier et al, 2001(Pelletier et al, , 2000a and June 2011 WALFUT (Pelletier et al, 2011) oceanographic voyages. In all cases we 4) LSC: Louisville Seamount Chain.…”

Section: Parameterisation Of Earthquake Fault-sourcesmentioning

confidence: 99%

“…Nonetheless, the tsunami was reported by local residents. We use the seafloor topography collected in October 1999, March 2000 and June 2011 (Pelletier et al, 2011(Pelletier et al, , 2001(Pelletier et al, , 2000a to select a 40 km-long fault source with 2 m slip at the seafloor resulting in an M W = 7.0 event.…”

Section: Local Sources -Futuna-alofi Transform Faultmentioning

confidence: 99%

“…Wallis archipelago. Land and lagoon coloured map from IGN (2007b); the shaded seafloor topography of the seaward reef wall is from the WALFUT survey(Pelletier et al, 2011). Insert shows land in grey and reef types as barrier reef (orange), fringing reef (yellow) and patch reef (pink) from the Reef Base database (http://www.reefbase.org).…”

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confidence: 99%

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Scenario-based numerical modelling and the palaeo-historic record of tsunamis in Wallis and Futuna, Southwest Pacific

Lamarche

Popinet²,

Pelletier³

et al. 2015

Nat. Hazards Earth Syst. Sci.

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International audienceWe investigated the tsunami hazard in the remote French territory of Wallis and Futuna, Southwest Pacific, using the Gerris flow solver to produce numerical models of tsunami generation, propagation and inundation. Wallis consists of the inhabited volcanic island of Uvéa that is surrounded by a lagoon delimited by a barrier reef. Futuna and the island of Alofi form the Horn Archipelago located ca. 240 km east of Wallis. They are surrounded by a narrow fringing reef. Futuna and Alofi emerge from the North Fiji Transform Fault that marks the seismically active Pacific-Australia plate boundary. We generated 15 tsunami scenarios. For each, we calculated maximum wave elevation (MWE), inundation distance and expected time of arrival (ETA). The tsunami sources were local, regional and distant earthquake faults located along the Pacific Rim. In Wallis, the outer reef may experience 6.8 m-high MWE. Uvéa is protected by the barrier reef and the lagoon, but inundation depths of 2–3 m occur in several coastal areas. In Futuna, flow depths exceeding 2 m are modelled in several populated areas, and have been confirmed by a post-September 2009 South Pacific tsunami survey. The channel between the islands of Futuna and Alofi amplified the 2009 tsunami, which resulted in inundation distance of almost 100 m and MWE of 4.4 m. This first ever tsunami hazard modelling study of Wallis and Futuna compares well with palaeotsunamis recognised on both islands and observation of the impact of the 2009 South Pacific tsunami. The study provides evidence for the mitigating effect of barrier and fringing reefs from tsunamis

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Section: Tectonics Of the Southwest Pacificmentioning

confidence: 99%

Section: Wallis and Futunamentioning

confidence: 99%

Section: Parameterisation Of Earthquake Fault-sourcesmentioning

confidence: 99%

Section: Local Sources -Futuna-alofi Transform Faultmentioning

confidence: 99%

mentioning

confidence: 99%

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Scenario-based numerical modelling and the palaeo-historic record of tsunamis in Wallis and Futuna, Southwest Pacific

Lamarche

Popinet²,

Pelletier³

et al. 2015

Nat. Hazards Earth Syst. Sci.

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Seamount egg‐laying grounds of the deep‐water skate Bathyraja richardsoni

Henry

Stehmann²,

Clippele

et al. 2016

Journal of Fish Biology

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Highly localized concentrations of elasmobranch egg capsules of the deep-water skate Bathyraja richardsoni were discovered during the first remotely operated vehicle (ROV) survey of the Hebrides Terrace Seamount in the Rockall Trough, north-east Atlantic Ocean. Conductivity-temperature-depth profiling indicated that the eggs were bathed in a specific environmental niche of well-oxygenated waters between 4·20 and 4·55 ∘ C, and salinity 34·95-35·06, on a coarse to fine-grained sandy seabed on the seamount's eastern flank, whereas a second type of egg capsule (possibly belonging to the skate Dipturus sp.) was recorded exclusively amongst the reef-building stony coral Solenosmilia variabilis. The depths of both egg-laying habitats (1489-1580 m) provide a de facto refuge from fisheries mortality for younger life stages of these skates. Key words: deep sea; elasmobranch; environment; habitat; reproduction.Global conservation of sharks, skates and rays is hampered by the stark lack of knowledge of deep-sea elasmobranchs in waters beyond the continental shelf (Kyne & Simpfendorfer, 2010), with 57·6% of deep-sea chondrichthyans listed by the IUCN as Data Deficient (Dulvy et al., 2014). Seamounts in the deep sea are often thought of as megafaunal hotspots, attracting animals such as sharks, tuna and cetaceans that forage, refuge and mate in the area (Morato et al., 2010). As technology such as baited photo-landers, remotely operated vehicles (ROV) and autonomous underwater vehicles (AUV) become standard tools, seamount exploration offers new opportunities for observing deep-sea elasmobranch behaviours in situ that can deepen understanding of habitat associations.There are three seamounts in the Rockall Trough west of the British Isles. The first ROV investigation of the southernmost seamount, the Hebrides Terrace Seamount

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Science et cartographie au Siècle des lumières

Cited by 2 publications

References 0 publications

Scenario-based numerical modelling and the palaeo-historic record of tsunamis in Wallis and Futuna, Southwest Pacific

Scenario-based numerical modelling and the palaeo-historic record of tsunamis in Wallis and Futuna, Southwest Pacific

Seamount egg‐laying grounds of the deep‐water skate Bathyraja richardsoni

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