固体地球科学(S)
セッション小記号地球内部科学・地球惑星テクトニクス
セッションIDS-IT30
タイトル和文Characterizing/contrasting seismic discontinuities in the oceanic and continental lithosphere
英文Characterizing/contrasting seismic discontinuities in the oceanic and continental lithosphere
タイトル短縮名和文Discontinuities within lithosphere
英文Discontinuities within lithosphere
代表コンビーナ氏名和文Xuzhang Shen
英文Xuzhang Shen
所属和文Lanzhou Insititute of Seismology, China Earthquake Administration
英文Lanzhou Insititute of Seismology, China Earthquake Administration
共同コンビーナ 1氏名和文Younghee Kim
英文Younghee Kim
所属和文Seoul National University
英文Seoul National University
共同コンビーナ 2氏名和文Teh-Ru Alex Song
英文Teh-Ru Alex Song
所属和文University College London
英文University College London
共同コンビーナ 3氏名和文Rainer Kind
英文Rainer Kind
所属和文
英文
発表言語EE
スコープ和文
英文The lithospheric seismic structure is crucial to understandings of the creation, modification and destruction of the plates. Oceanic lithosphere is typically thought to be the outcome of melting of undepleted mantle and subsequent cooling, whereas continental lithosphere, especially beneath the cratons, is often considered as the result of plume melting, stacking oceanic lithospheres or/and arc collision. However, later episodes of hydration, small-scale convective instability or/and and metasomatism, among other possibilities, potentially facilitate the modification and disruption of oceanic and continental lithosphere. Seismic discontinuities of variable sharpness, strength and polarity of their amplitudes are now frequently observed at many regions and defy predictions from a simple thermal boundary. More sophisticated modeling efforts suggest that some of these seismic discontinuities may be consequences of fine anisotropic layerings. The session focuses on characterizing seismic structures of lithosphere and their implications on the formation and evolution of the oceanic and cratonic lithosphere. We welcome abstracts that focus on new seismic observations with diverse dataset, improvement of the robustness of seismic processing/modeling, and welcome cross-disciplinary efforts that link seismic observations, deformation experiments, geodynamic modeling and geological/petrofabric data.
発表方法口頭および(または)ポスターセッション
招待講演 Brian Kennett (Research School of Earth Sciences, Australia National University)
Emily Chin (Scripps Institution of Oceanography, UCSD)
Catherine Rychert (National Oceanography Center Southampton, University of Southampton)