ALBERT — All Library Books, journals and Electronic Records Telegrafenberg

Hits per page

hits 1 - 3 | 3 hits

Sorting

Electronic Resource

Coupes Sismiques des Structures Superficielles dans les Petites Antilles—II: Martinique (1980)

Eschenbrenner, Sylvain ; Dorel, Jacques ; Viode, Jean-Pierre

Springer

Pure and applied geophysics 118 (1980), S. 807-822

add to mindlist on the mindlist

Details

ISSN: 1420-9136

Keywords: Seismic refraction profiles in Martinique ; Martinique, seismic refraction profiles

Source: Springer Online Journal Archives 1860-2000

Topics: Geosciences , Physics

Description / Table of Contents: Résumé En 1977, deux profils sismiques ont été réalisés en Martinique, un dans la région volcanique de la Montagne Pelée, l'autre dans la partie est de l'île. Le premier couvrait des distances de 3 à 23 km et le second de 2 à 50 km. Les structures superficielles du volcan sont interprétées par un modèle à trois couches. Sur une couche déjà connue, à 6,1 km/s nous trouvons, avec une épaisseur de 0,4 à 2,6 km, une vitesse de 4,3 km/s. En surface et jusqu'à une profondeur de 0,8 à 1,4 km la vitesse est d'environ 2,7 à 2,9 km/s. Dans la partie est de la Martinique, il existe une vitesse élevée-6,5 km/s—à partir d'une profondeur faible, de l'ordre de 3 km.

Notes: Abstract In 1977, two seismic profiles were carried out in Martinique, one in the area of ‘Montagne Pelée’ volcano, and the second in the eastern part of the island. The length of the first profile ranges from 3 to 23 km and the second from 2 to 50 km. The interpretation shows that the superficial structures of the volcano may be characterized by a three layer model: in the first layer the compressional velocity is about 2.7 to 2.9 km/s, the thickness varying from 0.8 to 1.4 km. The second layer has a velocity of 4.3 km/s and the thickness goes from 0.4 to 2.6 km. The deeper layer known at Leeward West Indies has a 6.1 km/s velocity. The second profile shows that the eastern part of Martinique is marked by a high velocity of 6.5 km/s, found at a depth of 3 km.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF01593032

Permalink

	Location	Call Number	Expected	Availability

Others were also interested in ...

Paper (German National Licenses)

Fulltext

Electronic Resource

Shallow seismicity at Montagne Pelée volcano, Martinique, Lesser Antilles (1987)

Hirn, Alfred ; Girardin, Nicole ; Viodé, Jean-Pierre ; [et al.]

Springer

Bulletin of volcanology 49 (1987), S. 723-728

add to mindlist on the mindlist

Details

ISSN: 1432-0819

Source: Springer Online Journal Archives 1860-2000

Topics: Geosciences

Notes: Abstract Continuous seismic monitoring at Martinique since the 1902 eruption of the Montagne Pelée volcano did not detect local earthquakes for the first 70 years. For the only eruption which occurred in this time span in 1929 the seismograph was 20 km away and of a standard type, not particularly suited for the detection of small-scale local seismicity. Improvement of the monitoring array over the last 15 years with the installation of sensors on the volcano itself allowed the detection of signals of local origin which were interpreted as being due to surface sources, such as rockfalls and landslides. Since December 1985 seismic sources in the volcano itself, i.e. small earthquakes at shallow depth, were identified and located with the aid of a temporary upgrading of the array close to these weak sources. Such an onset of local seismicity could not have been detected with previous seismic equipment; such episodes of seismicity in the volcano might have occurred in the past, apparently quiescent history of the volcano as the reinterpretation of seismograms of some events in 1976 would indicate, without evolving to more important volcanic phenomena. For seismographs on volcanoes the constant upgrading of observation capabilities is certainly perferred to a strict continuity of standard observations.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF01079823

Permalink