Inventory of echinoderms in the Iles Eparses (Europa, Glorieuses, Juan de Nova), Mozambique Channel, France

A new fissiparous asterinid seastar Aquilonastra chantalae sp. nov. is described from Europa Island, one of the Scattered Islands (Les îles Éparses) in the Mozambique Channel. It is compared with the fissiparous asterinid Aquilonastra conan-dae O’Loughlin & Rowe from the Mascarene Islands. A table of distinguishing diagnostic characters is provided. The as-terinid Aquilonastra richmondi O’Loughlin & Rowe is reported forEuropaIsland.

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Gestion ou cogestion des « réserves naturelles » créées sur les îles Eparses de la zone sud-ouest de l'océan Indien et du canal de Mozambique ? (Le cas spécifique du récif de Tromelin, de l'archipel des Glorieuses et des îlots Juan de Nova, Europa et Bassas da India)

Revue Juridique de l Environnement ◽

10.3406/rjenv.2001.3869 ◽

2001 ◽

Vol 26 (1) ◽

pp. 5-30

Author(s):

André Oraison

Keyword(s):

Îles Éparses

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Origin and Preservation Conditions of Organic Matter in the Mozambique Channel: Evidence for Widespread Oxidation Processes in the Deep-Water Domains

Marine Geology ◽

10.1016/j.margeo.2021.106589 ◽

2021 ◽

pp. 106589

Author(s):

Martina Torelli ◽

Anne Battani ◽

Daniel Pillot ◽

Eric Kohler ◽

Joel Lopes De Azevedo ◽

...

Keyword(s):

Organic Matter ◽

Deep Water ◽

Oxidation Processes ◽

Mozambique Channel ◽

Preservation Conditions

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SST Anomalies in the Mozambique Channel Using Remote Sensing and Numerical Modeling Data

Remote Sensing ◽

10.3390/rs11091112 ◽

2019 ◽

Vol 11 (9) ◽

pp. 1112

Author(s):

Guoqing Han ◽

Changming Dong ◽

Junde Li ◽

Jingsong Yang ◽

Qingyue Wang ◽

...

Keyword(s):

Remote Sensing ◽

Mixed Layer Depth ◽

Surface Wind ◽

Radiant Heat ◽

Heat Fluxes ◽

Sea Surface ◽

Surface Mixed Layer ◽

Mozambique Channel ◽

Sea Surface Wind ◽

Sst Anomalies

Based on both satellite remote sensing sea surface temperature (SST) data and numerical model results, SST warming differences in the Mozambique Channel (MC) west of the Madagascar Island (MI) were found with respect to the SST east of the MI along the same latitude. The mean SST west of the MI is up to about 3.0 °C warmer than that east of the MI. The SST differences exist all year round and the maximum value appears in October. The area of the highest SST is located in the northern part of the MC. Potential factors causing the SST anomalies could be sea surface wind, heat flux and oceanic flow advection. The presence of the MI results in weakening wind in the MC and in turn causes weakening of the mixing in the upper oceans, thus the surface mixed layer depth becomes shallower. There is more precipitation on the east of the MI than that inside the MC because of the orographic effects. Different precipitation patterns and types of clouds result in different solar radiant heat fluxes across both sides of the MI. Warm water advected from the equatorial area also contribute to the SST warm anomalies.

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Variability in the Mozambique Channel Trough and Impacts on Southeast African Rainfall

Journal of Climate ◽

10.1175/jcli-d-19-0267.1 ◽

2020 ◽

Vol 33 (2) ◽

pp. 749-765 ◽

Cited By ~ 3

Author(s):

Rondrotiana Barimalala ◽

Ross C. Blamey ◽

Fabien Desbiolles ◽

Chris J. C. Reason

Keyword(s):

Indian Ocean ◽

Austral Summer ◽

Western Indian Ocean ◽

Strong Relationship ◽

Ocean Basin ◽

Moist Convection ◽

South Indian Ocean ◽

Mozambique Channel ◽

Mascarene High ◽

South Indian

AbstractThe Mozambique Channel trough (MCT) is a cyclonic region prominent in austral summer in the central and southern Mozambique Channel. It first becomes evident in December with a peak in strength in February when the Mozambique Channel is warmest and the Mascarene high (MH) is located farthest southeast in the Indian Ocean basin. The strength and the timing of the mean MCT are linked to that of the cross-equatorial northeasterly monsoon in the tropical western Indian Ocean, which curves as northwesterlies toward northern Madagascar. The interannual variability in the MCT is associated with moist convection over the Mozambique Channel and is modulated by the location of the warm sea surface temperatures in the south Indian Ocean. Variability of the MCT shows a strong relationship with the equatorial westerlies north of Madagascar and the latitudinal extension of the MH. Summers with strong MCT activity are characterized by a prominent cyclonic circulation over the Mozambique Channel, extending to the midlatitudes. These are favorable for the development of tropical–extratropical cloud bands over the southwestern Indian Ocean and trigger an increase in rainfall over the ocean but a decrease over the southern African mainland. Most years with a weak MCT are associated with strong positive south Indian Ocean subtropical dipole events, during which the subcontinent tends to receive more rainfall whereas Madagascar and northern Mozambique are anomalously dry.

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Migration of exotic species of ammonites during highstands of sea level

The Paleontological Society Special Publications ◽

10.1017/s2475262200008844 ◽

1992 ◽

Vol 6 ◽

pp. 324-324

Author(s):

Keith Young

Keyword(s):

North America ◽

South America ◽

Exotic Species ◽

Sea Level ◽

South Atlantic ◽

Horn Of Africa ◽

Mozambique Channel ◽

The North ◽

North And South ◽

Early Late

In northeastern Chihuahua and Trans-Pecos Texas, in the early Late Albian zone of Hysteroceras varicosum occurs the Boeseites romeri (Haas) fauna with B. romeri (Hass), B. perarmata (Hass), B. aff. barbouri (Haas), B. cf. howelli (Haas), B.proteus (Haas), Prohysteroceras cf. P. hanhaense Haas, Elobiceras sp., and Dipoloceras (?) sp. B. perarmata has also been collected at Cerro Mercado, near Monclova, Coahuila. Haas originally described this fauna from Angola. Now, from rocks in the same zone in the Sierra Mojada, Coahuila, Mexico, there is a form related to if not identical with Hysteroceras famelicum Van Hoepen, also originally described from Angola and also from the zone of Hysteroceras varicosum.These fossils are known only from southern North America and Angola; they have not been described from the European Tethys. In 1984 I suggested that during the highstand of sea level of the early Late Albian (Hysteroceras varicosum zone) these ammonites migrated from Angola to Mexico and Trans-Pecos Texas via an epeiric seaway extending across the sag between South America and Africa proposed by Kennedy and Cooper. This would be twelve to fifteen million years prior to an oceanic connection between the North and South Atlantic.I would now ask, can similar epeiric seas and highstands of sea level explain the migration of successive European, Tethyan, Jurassic ammonite faunas down the Mozambique Channel and around the horn of Africa into the Neuquen Basin of Argentina before Africa and Antarctica separated, as proposed by Spath.

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