Continuous GPS Observation at Kuchierabujima Volcano-April 2004 to March 2005-

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Bibliographic Information

Other Title
  • 口永良部島火山におけるGPS連続観測-2004年4月～2005年3月-

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Abstract

Ground deformation at Kuchierabujima volcano has been monitored by continuous GPS observation since April 2004. In order to reduce seasonal changes which often appear on the upheaval component for GPS station pairs with large height differences, a simple model was developed for correction of the vertical component. The atmospheric effect is linearly reduced, based on the measured pressure, temperature and humidity. The data at a station NW beside the summit crater showed 1 cm northwestward movement without remarkable vertical one for two months from the end of December 2004. No remarkable baseline changes were detected at the flank. The deformation may be caused by a pressure source at a quite shallow depth beneath the summit crater. The change accompanied with an increase in seismicity suggests inflation of hydrothermal system beneath the crater.

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Details 詳細情報について

  • CRID
    1050282677085708928
  • NII Book ID
    AN00027784
  • ISSN
    0386412X
  • HANDLE
    2433/26515
  • Text Lang
    ja
  • Article Type
    departmental bulletin paper
  • Data Source
    • IRDB

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