Fieldwork was carried out by the A. in February 1990. A principal aim was to investigate the island's recent tectonic history for which precise information about contemporary sea-level was needed. This proved no problem for Tongatapu's northern (low
-energy) coast, where tidal range averages 1.2 m, but the relationship between sea-level and shoreline geomorphology proved less easy to discern along the south (high-energy) coast. Tongatapu's windward coasts are classified in this paper on the basis
The orientation of sorted stripes in the maritime subantarctic, Marion Island
Dynamique de versant ; Glace ; Ile ; Océan Indien ; Pente de versant ; Prince Edward Island ; Périglaciaire ; Traînée avec triage ; Vent ; Zone froide ; Zone subantarctique
Cold area ; Ice ; Indian Ocean ; Island ; Periglacial features ; Prince Edward Island ; Slope dynamics ; Slope gradient ; Wind
The orientation of sorted stripes developed in glacial deposits on Marion Island is examined. This study confirms earlier reports of preferential occurrence of sorted stripes on windward slopes. However, sorted stripes were also found to occur
; Organisation internationale ; Politique étrangère ; Processus de décision ; Régionalisation ; Trinité-et-Tobago ; West Indies ; West Indies Associated States ; Windwardislands
Antilles ; Antilles anglaises ; Bahamas ; Barbade ; Belize ; CARICOM ; Commonwealth ; Grenada ; Guyane ; Géographie de l'Amérique ; Histoire ; Intégration politique ; Intégration économique ; Jamaïque ; Leeward islands ; Mer des Caraïbes
; Petites Antilles ; Prospective ; Saint Vincent et les Grenadines ; Sainte Lucie ; Système de peuplement ; Transport ; Usage domestique ; WindwardIslands
En Islande, la géothermie supplée le manque d'énergie fossile. L'A. retrace l'histoire de l'utilisation de cette source d'énergie et présente la situation actuelle de l'Islande.―(D. Rouvière).
Plate boundary tectonics and oceanic island geomorphology in The geomorphology of plate boundaries and active continental margins.
This paper illustrates how studies of the geomorphology of oceanic islands can contribute to the understanding of nearby plate boundaries. For this purpose, an oceanic island is defined as one within an ocean basin. Case studies are given of three
contrasting situations : a) islands behind a subduction zone (the Law islands behind the Tonga trench in the Pacific| b) an island oceanwards of a trench (Christmas island near the Sunda trench in the Indian Ocean| c) islands scattered each side of a spreading