JpGU Meeting 2018
Session outline| Solid Earth Sciences(S) | ||
|---|---|---|
| Session Sub-category | Science of the Earth's Interior & Tectonophysics | |
| Session ID | S-IT28 | |
| Title | The lithosphere and the asthenosphere | |
| Short Title | Lithosphere and asthenosphere | |
| Main Convener | Name | Catherine Rychert |
| Affiliation | University of Southampton | |
| Co-Convener 1 | Name | Hitoshi Kawakatsu |
| Affiliation | Earthquake Research Institute, University of Tokyo | |
| Co-Convener 2 | Name | Samer Naif |
| Affiliation | Lamont Doherty Earth Observatory | |
| Co-Convener 3 | Name | Jessica M Warren |
| Affiliation | University of Delaware | |
| Session Language | EE | |
| Scope | 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. | |
| Presentation Format | Oral and Poster presentation | |
| Joint Session with | AGU, EGU | |
| Invited Authors |
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| Time | Presentation No | Title | Presenter | Abstract |
|---|---|---|---|---|
| Oral Presentation May 22 PM1 | ||||
| 13:45 - 14:00 | SIT28-01 | Trans-dimensional Bayesian inversion for the crust and upper mantle using Ps/Sp receiver functions and multi-mode surface waves | Toru Taira | Abstract |
| 14:00 - 14:15 | SIT28-02 | Anisotropy of the upper mantle beneath Mid-Atlantic Ridge: Results from the PiLAB experiment | J Michael Kendall | Abstract |
| 14:15 - 14:30 | SIT28-03 | Mismatch between SKS splitting and flow model predictions for densely sampled continental plates challenges our understanding of the structure of the lithosphere and asthenospheric dynamics | Thorsten W Becker | Abstract |
| 14:30 - 14:45 | SIT28-04 | Imaging the crust and mantle beneath the equatorial Mid-Atlantic Ridge using the PI-LAB experiment | Catherine Rychert | Abstract |
| 14:45 - 15:00 | SIT28-05 | Geophysical observations reveal dehydration-modulated small-scale convection beneath oceans | Zhitu Ma | Abstract |
| 15:00 - 15:15 | SIT28-06 | Determination of Intrinsic Attenuation in the Oceanic Lithosphere-Asthenosphere System | Nozomu Takeuchi | Abstract |
| Oral Presentation May 22 PM2 | ||||
| 15:30 - 15:45 | SIT28-07 | Application of a new anelasticity model to the seismic discontinuity at the lithosphere-asthenosphere boundary | Hatsuki Yamauchi | Abstract |
| 15:45 - 16:00 | SIT28-08 | Does olivine LPO systematically scale with water and stress in naturally deformed rocks? | Whitney M Behr | Abstract |
| 16:00 - 16:15 | SIT28-09 | Anisotropic high-temperature plasticity of wet single crystal olivine and its geodynamic implications | Sagar Shrishailappa Masuti | Abstract |
| 16:15 - 16:30 | SIT28-10 | Diffusion creep in the oceanic lithosphere and asthenosphere | Takehiko Hiraga | Abstract |
| 16:30 - 16:45 | SIT28-11 | Dynamic processes in lithosphere-asthenosphere boundary zone; rheological structure from Ichinomegata mantle xenoliths | Yuto Sato | Abstract |
| 16:45 - 17:00 | SIT28-12 | Thermal and kinematic history of subcontinental lithosphere: Mantle xenoliths from Colorado plateau and Rio Grande rift | Saeri Narita | Abstract |
| Presentation No | Title | Presenter | Abstract |
|---|---|---|---|
| Poster Presentation May 22 Core Time | |||
| SIT28-P01 | Unexpected consequences of transverse isotropy | Hitoshi Kawakatsu | Abstract |
| SIT28-P02 | Inversions for radially anisotropic upper mantle structure with the new fifth anisotropic parameter ηκ using multi-mode surface waves | Shuya Okuyama | Abstract |
| SIT28-P03 | VTI mantle structure under the northeast Pacific ocean | Jumpei Maruyama | Abstract |
| SIT28-P04 | Upper mantle structure beneath the Pacific Ocean revealed from seafloor and land broadband seismic observations | Takehi Isse | Abstract |
| SIT28-P05 | Phase speed and arrival angle measurements of multi-mode surface waves with array-based analysis | Hitoshi Matsuzawa | Abstract |
| SIT28-P06 | A probabilistic approach to surface waves tomography of the upper mantle and lithosphere/asthenosphere boundary characterization | Gaël Burgos | Abstract |
| SIT28-P07 | Measurements of Rayleigh-wave particle motions: Implication for crust and upper mantle structure beneath the Japanese islands | Kazunori Yoshizawa | Abstract |
| SIT28-P08 | Construction of stable S receiver function and its application to observations of seismic discontinuities in the lithosphere-asthenosphere system beneath South Korea | Younghee Kim | Abstract |
| SIT28-P09 | Numerical modelling of volatiles in Earth's mantle | Philipp Eichheimer | Abstract |
| SIT28-P10 | Preliminary study using harmonic decomposition of receiver functions to image non-isotropic characteristics of Japan subduction zone | HyeJeong Kim | Abstract |
| SIT28-P11 | Discordance between P- and S-wave tomography models using ISC travel time data | Misaki Horiuchi | Abstract |
| SIT28-P12 | Thermal evolution of lithosphere-asthenosphere boundary; direct observation from the Lanzo massif, western Alps, Italy | Tomo Aoki | Abstract |