[S-IT28] The lithosphere and the asthenosphere

2018年5月22日(火) 10:45 〜 12:15 ポスター会場 (幕張メッセ国際展示場 7ホール)

コンビーナ:Catherine Rychert(University of Southampton)、川勝均(東京大学地震研究所)、Samer Naif(共同)、Jessica M Warren (University of Delaware)

The lithosphere-asthenosphere boundary (LAB) separates Earth's rigid tectonic plates from the underlying convecting mantle. The LAB is fundamental to our understanding of plate tectonics and mantle dynamics, although its depth and defining mechanism are highly debated. How it varies among tectonic environments and its relationship to the Moho, MLD, and anisotropy are also poorly understood. Ocean bottom seismic data is particularly important for constraining the young plate with relatively simple history, although this data is difficult to attain and rare. We will focus on the lithosphere, the asthenosphere, and the lithosphere-asthenosphere system in a variety of settings including but not limited to continents, oceans, margins, rifts, ridges, hotspots, plumes, and subduction zones. We welcome research contributions from diverse fields, including but not limited to seismology, magnetotellurics, petrology/mineralogy, dynamical modelling, and mineral physics.

[SIT28-P01] Unexpected consequences of transverse isotropy

*川勝均¹ (1.東京大学地震研究所)

[SIT28-P02] Inversions for radially anisotropic upper mantle structure with the new fifth anisotropic parameter η_κ using multi-mode surface waves

*奥山秀弥¹、吉澤和範²、川勝均³ (1.北海道大学　理学院　、2.北海道大学　大学院理学研究院、3.東京大学地震研究所)

[SIT28-P03] VTI mantle structure under the northeast Pacific ocean

*丸山純平¹、川勝均¹、竹内希¹ (1.東京大学地震研究所)

[SIT28-P04] Upper mantle structure beneath the Pacific Ocean revealed from seafloor and land broadband seismic observations

*一瀬建日¹、塩原肇¹、川勝均¹、吉澤和範²、杉岡裕子³、伊藤亜妃⁴、末次大輔⁴ (1.東京大学地震研究所、2.北海道大学、3.神戸大学、4.海洋研究開発機構)

[SIT28-P05] Phase speed and arrival angle measurements of multi-mode surface waves with array-based analysis

*松澤仁志¹、吉澤和範² (1.北海道大学大学院理学院、2.北海道大学大学院理学研究院)

[SIT28-P06] A probabilistic approach to surface waves tomography of the upper mantle and lithosphere/asthenosphere boundary characterization

*Gaël Burgos¹、Jean-Paul Montagner¹ (1.Institut de Physique du Globe de Paris)

[SIT28-P07] Measurements of Rayleigh-wave particle motions: Implication for crust and upper mantle structure beneath the Japanese islands

池戸健悟¹、*吉澤和範^1,2、西田究³ (1.北海道大学大学院理学院、2.北海道大学大学院理学研究院、3.東京大学地震研究所)

[SIT28-P08] Construction of stable S receiver function and its application to observations of seismic discontinuities in the lithosphere-asthenosphere system beneath South Korea

Xuzhang Shen¹、*Younghee Kim²、Teh-Ru Alex Song³、Hobin Lim² (1.Sun-Yat Sen University、2.Seoul National University、3.University College London)

[SIT28-P09] Numerical modelling of volatiles in Earth's mantle

*Philipp Eichheimer¹、Marcel Thielmann¹、Gregor J. Golabek¹ (1.Bayerisches Geoinstitut, University of Bayreuth)

[SIT28-P10] Preliminary study using harmonic decomposition of receiver functions to image non-isotropic characteristics of Japan subduction zone

*HyeJeong Kim^1,2、Hitoshi Kawakatsu¹、Takeshi Akuhara¹ (1.Earthquake Research Institute, The University of Tokyo、2.Department of Earth and Planetary Science, Graduate School of Science, The University of Tokyo)

[SIT28-P11] ISC走時データを用いたP波，S波トモグラフィーの相違に対する考察

*堀内美咲¹、杉岡裕子¹、大林政行² (1.神戸大学、2.海洋研究開発機構)

[SIT28-P12] Thermal evolution of lithosphere-asthenosphere boundary; direct observation from the Lanzo massif, western Alps, Italy

*青木智¹、小澤一仁¹、Bodinier Jean-Louis²、Boudier Françoise² (1.東京大学、2.モンペリエ第二大学)

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