Spacial distribution and time variation in seismicity around the Antarctic Plate-Indian Ocean region

Spacial distribution and time variations in seismicity around the Antarctic Plate-Indian Ocean (0-160°E , 20-80°S ) is evaluated based on the data compiled at the global seismological centers since 1964. Seismicity in the oceanic area of the Antarctic plate, along with ridges/transform faults between the Indian-Australian Plate, represents characteristic features before and after large earthquakes, such as the Balleny Earthquake on March 25, 1998. Seismicity in the aseismic ridges immediately east of the Australia-Antarctic Discordance (AAD) increased the year before occurrence of the Balleny Earthquake. Long period variations in seismicity during more than 30 years imply several characteristic time periods of increase in cumulative seismicity, associated with dynamic distribution of tectonic stress in space and time between adjacent plates. Time variations in seismicity around the Balleny Earthquake region, in particular, drastically changed before and after the main shock in March 1998. The recent distribution of hypocenters in this area appears to extend toward Wilks Land, followed by the excitation of local events beneath the continental ice sheet of Antarctica. Seismic activities of these areas might reflect far-field tectonic stress in the lithosphere around the region

Basement geological research of East Antarctica

The Tenth Symposium on Polar Science/Special session: [S] Future plan of Antarctic research: Towards phase X of the Japanese Antarctic Research Project (2022-2028) and beyond, Tue. 3 Dec. / Entrance Hall (1st floor) at National Institute of Polar Research (NIPR

Upper mantle electrical resistivity structure beneath the Southwest Indian Ridge 37ºE

第3回極域科学シンポジウム/第32回極域地学シンポジウム 11月30日（金） 国立極地研究所 ３階ラウン

Future efforts to contribute to the International Height Reference System (IHRS)

The Tenth Symposium on Polar Science/Special session: [S] Future plan of Antarctic research: Towards phase X of the Japanese Antarctic Research Project (2022-2028) and beyond, Tue. 3 Dec. / Entrance Hall (1st floor) at National Institute of Polar Research (NIPR

Magnetic anomaly observations around Syowa Station, Antarctica

第3回極域科学シンポジウム/第32回極域地学シンポジウム 11月29日（木） 統計数理研究所 ３階セミナー

ニホン ノ ナンキョク カンソク カツドウ ニオケル チリ ジョウホウ システム GIS ポータルサイト

デジタル化された空間情報を元にした地理情報システム(GIS)は,現在様々な分野で活用されている.日本南極地域観測で得られた地図データを,研究者を始め多くの人々に容易に利用可能にするため,情報・システム研究機構新領域融合研究センターの新領域融合プロジェクトのもと,南極GISポータルサイトを構築した.国土地理院および国立極地研究所が保有する南極域の地図データを,Web上で利用可能なようにデジタル化し,南極域の基礎的な空間情報がほぼ整備された.南極GISポータルサイトにより,地図を利用する基本的な作業がWeb上で行えるようになった.また,南極GISポータルサイトでは,Google Earth等のアプリケーションと連携が可能な地図データセットが提供されている.異なった種類の地図の位置データの整合性をとるという問題は残されているが,今後,南極GISポータルサイトを基礎とした,より充実した活用方法等が望まれる.GIS (Geographic Information Systems) based on digitized spatial informations have been employed in various fields recently. GIS portal site of Japanese Antarctica research has been built under the project of transdisciplinary research integration of Research Organization of Information and Systems to make good use of Antarctic map data for researchers and the public. The map data of Antarctica that the Geospatial Information Authority of Japan and the National Institute of Polar Research hold were digitized for use on the GIS portal site Web services. Fundamental spatial information on the Antarctic region was prepared, and GIS portal site of Japanese Antarctica research provides basic map operation services on the Web. GIS portal site of Japanese Antarctica research also serves data set of the map that are available for Google Earth and the other GIS application. Although the location errors of various kind of map data should be fixed, substantial use of GIS portal site of Japanese Antarctica research are expected

Gravity field determination in Antarctica using GOCE data and its applications

第2回極域科学シンポジウム/第31回極域地学シンポジウム 11月16日（水） 国立国語研究

Antarctic Circumpolar Current Fluctuation in the Late Neogene: constraint from sediment wave on the Conrad Rise, Indian Sector of the Southern Ocean

第3回極域科学シンポジウム　横断セッション「海・陸・氷床から探る後期新生代の南極寒冷圏環境変動」11月26日（月） 国立国語研究所 ２階講

Early break-up process of Gondwana around the Natal Valley, off South Africa, deduced from vector magnetic anomalies

第3回極域科学シンポジウム/第32回極域地学シンポジウム 11月30日（金） 統計数理研究所 ３階セミナー