RUSSIAN JOURNAL OF EARTH SCIENCES VOL. 11, RE3001, doi:10.2205/2009ES000358, 2010
Information technologies in geomagnetic investigations of Late Cenozoic Pacific submarine volcanoesV. A. Rashidov1, I. M. Romanova1, V. I. Bondarenko2, A. A. Palueva1 1Institute of Volcanology and Seismology FEB RAS, Petropavlovsk-Kamchatsky, Russia 2Kostroma State University, Kostroma, Russia
The original actual materials collected during the geomagnetic research on the research vessel "Vulkanolog" in 1977-1991 (19 volcanological expeditions) resulted in important contribution into the world data on the structure of Late Cenozoic Pacific submarine volcanoes.The research resulted in a single method analysis of the anomalous magnetic field of submarine volcanoes and volcanic zones within the Kurile, Izu-Bonin, Mariana, Solomon and Kermadec arcs, New Guinean and South China peripheral seas and within the Socorro hot-spot. It is stressed that the Late Cenozoic submarine volcanoes within the arcs show their presence distinctly in the anomalous magnetic field by local anomalies located within the edifices. Their amplitude may reach 3000 nT, and the horizontal gradient of the field may exceed 100 nT/km. The data interpretation of the hydromagnetic survey allowed distinguishing the internal structure of single submarine volcanoes, volcanic massifs and volcanic zones in various Pacific regions. The authors revealed the bodies forming anomalies within the isolated volcanic edifices and submarine volcanic zones. The 2.5D and 3D modeling resulted in the estimation of the body ages and the period of the submarine volcanic activity. Besides the research resulted in estimation of the edifice volumes, scale of submarine volcanic activity and drew the conclusion on the evolution of certain volcanic massifs. In order to classify and visualize the materials on the geomagnetic research we continue to create "Late Cenozoic Pacific submarine volcanoes" information system. Currently the information system includes:
Received 29 October 2009; accepted 17 November 2009; published 9 January 2010.
Keywords: information system, submarine volcanoes, web technologies, database, GIS technologies
Citation: (2010), Information technologies in geomagnetic investigations of Late Cenozoic Pacific submarine volcanoes, Russ. J. Earth Sci., 11, RE3001, doi:10.2205/2009ES000358.Copyright 2010 by the Russian Journal of Earth Sciences