Record details

Title
    Earthquake occurrence reveals magma ascent beneath volcanoes and seamounts in the Banda Region
Author
    Kuna, Václav
    Špičák, Aleš
    Vaněk, Jiří
Language
    anglicky
Publication type
    článek v odborném periodiku
Source title - serial
    Bulletin of Volcanology
Vol./nr.
    Roč. 75, č. 777
Year
    2013
Notes
    Projekt: ME09011, GA MŠk3cav_un_auth*0252835
    Rozsah: 8 s. : P
Subject category
    Banda region
    earthquake swarm
    global seismological data
Keyword
    Ascent
    Banda
    Beneath
    Earthquake
    Magma
    Occurrence
    Region
    Reveals
    Seamounts
    Volcanoes
Abstract (in english)
   Characteristic seismicity patterns beneath the volcanic arcs of the Banda region, SE Asia, suggest that magmatic processes have recently occurred beneath submarine portions of the arcs, forming yet-unrecognised submarine volcanoes. We have found that almost 50 % of earthquakes spatially associated with the Banda and Ambon volcanic arcs occurred in sequences with epicenters often concentrated in a small area and foci distributed in vertically elongated domains. The most pronounced occurrence of such earthquake series and swarms was observed in the area of the Manipa submarine basin (latitude 3.75 degrees S, longitude 127.5 degrees E, ESE of Buru Island), the remarkable morphology of which resembles a huge caldera (60 km in diameter) with a distinct cone seamount in its center, reaching almost 3000 m above seafloor. Another candidate for an unrecognised submarine volcano is an area between volcanoes Banda Api and Manuk, with a huge 1973/74 earthquake swarm.
Contributor
    AV ČR Brno, Geofyzikální ústav
Contributor code
    AV ČR, GFÚ
Source format
    U
Import date
    23. 10. 2014