Для решения задач систематизации, хранения и визуализации материалов, полученных в 1977-1991 гг. в 19 вулканологических экспедициях НИС "Вулканолог" в Тихом океане в Институте вулканологии и сейсмологии ДВО РАН, начиная с 2004 г., создается информационная система “Позднекайнозойские подводные вулканы Тихого океана”. Информационная система включает веб-сайт, базу данных и ГИС.

For the first time in investigations of Klyuchevskoy, the sampling of gases was made directly in magma discharge during the flank eruption of 1988. High-temperature gases (1050—1100° C) are enriched in water and haloids, and impoverishen in sulphur; their compositions are close to that of chemical equilibrium at the temperature of sampling, the oxidizing state being formed in conditions that are close to redox conditions of NNO and QFM buffers. The isotopic composition of magmatic water (—71 %о<δD<—44%о; +6.3%о <δ18O< +8.4%о, SMOW) is in concordiance with the interval of «primary magmatic» waters. The isotopic composition of molecular hydrogen (—187%o<δD<— 160%о, SMOW) was formed in terms of isotopic equilibrium with water. Chemical composition of gases and isotopic composition of carbon in carbonic acid (δ13Cco2 = —11,6%о, PDB) indicate the significant degassing of magma of the 1988 flank eruption.
(Received October 4. 1989)

* Institute of Volcanology, Far East Division, USSR Academy of Sciences. Petro-pavtovsk-Kamchatskii, 683006, USSR
** Institute of Hydrous Problems, USSR Academy of Sciences, Moscow, 103064, USSR

Проведены исследования газового состава и изотопного отношения гелия и 4He/20Ne гидротерм в пределах Карымского вулканического центра и характера их изменений в связи с активизацией тек-тоно-магматической обстановки в этом регионе, проявившейся в конце 1995 г. и в начале 1996 г. в виде серии сильных землетрясений, извержения Карымского вулкана и мощного подводного извержения, эпицентр которого располагался в Карымском озере. Опробованы как ранее существовавшие здесь источники Карымские и Академии Наук, так и вновь образовавшиеся гидротермы и фумарола в районе подводного извержения. Совместно в этим изучен состав растворенных газов оз. Карымское

Creation of geoportals and metadata management systems as a part of spatial data infrastructure is one of the modern trends of geoinformation technologies evolution. This paper suggests one of the possible technologies for creation of peripheral node for the Academy of Sciences spatial data infrastructure based on free open source software. The author describes certain aspects of creation of a metadata catalogue as a first stage to creation of geoportal in the Institute of Volcanology and Seismology FEB RAS.

A large amount of unique scientific data has been collected in the Institute of Volcanology and Seismology FEB RAS (IVS FEB RAS) over the past years of investigations of the Kamchatka and the Kurile Island Arc volcanoes. The distributed storage of data makes it difficult to search data and to use them effectively in scientific research. Actual tasks are the integration of data into thematic information resources, organization of data access on the Internet, as well as the creation of tools for their comprehensive analysis. The paper describes VOKKIA and KVERT information web-systems developed in the IVS FEB RAS. VOKKIA is designed to integration and systematization of heterogeneous scientific data on the terrestrial volcanoes of Kamchatka, the Kurile Islands and submarine volcanoes on the surrounding seas including data on historical eruptions of active volcanoes. The KVERT system contains brief information about active volcanoes of Kamchatka and the Northern Kuriles including their hazard; provides collection and storage of operational data of visual, video, and satellite monitoring of volcanoes; automated preparation and sending KVERT releases on volcanic activity. Besides, the article describes the organization of data exchange between VOKKIA and KVERT and external information systems; describes graphical visualization services and statistical data analysis that helps to detect the relationship, patterns and trends in volcanic processes over time.

The article describes technology development, structure and content of an information system “Volcanoes of the Kurile-Kamchatka island arc” which will allow integration of wide range of volcanological data on volcanoes in Kamchatka, Kurile Islands and adjacent seas into a single information environment available for Internet users.

A large amount of unique scientific data about the Kamchatka and the Kurile Island Arc volcanoes has been collected in the Institute of Volcanology and Seismology FEB RAS. The paper describes VOKKIA and KVERT information web-systems. VOKKIA is designed to integration and systematization of heterogeneous scientific data on the terrestrial and submarine volcanoes of Kurile-Kamchatka Island Arc including data on their eruptions. The KVERT system provides collection and storage of operational data of monitoring of active volcanoes. Besides, the article describes graphical visualization services that helps to detect the relationship, patterns and trends in volcanic processes over time.