Japan Geoscience Union Meeting 2015

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Oral

Symbol S (Solid Earth Sciences) » S-GD Geodesy

[S-GD23] Gravity and Geoid

Wed. May 27, 2015 4:15 PM - 6:00 PM 102A (1F)

Convener:*Jun Nishijima(Department of Earth Resources Engineering, Graduate School of Engineering, Kyushu University), Yuichi Aoyama(National Institute of Polar Research), Chair:Jun Nishijima(九州大学大学院), Takayuki Miyazaki(Geospatial Information Authority of Japan)

5:15 PM - 5:30 PM

[SGD23-05] Development of a portable laser-interferometric gravity-gradiometer

*Sachie SHIOMI1 (1.Sachie Shiomi)

Keywords:gravity gradients, environment measurements

We are developing a portable laser-interferometric gravity-gradiometer for environmental measurements. In the gravity gradiometer, differential accelerations between two test masses, which are in free fall at different heights in a vacuum tank, are measured by a laser interferometer. A prototype of the gravity gradiometer was built up, and its performance was tested at the Sakurajima Volcanological Laboratory of the Kyoto University. We will report the current status of the development.