JpGU Meeting 2018
Session outline| Solid Earth Sciences(S) | ||
|---|---|---|
| Session Sub-category | Science of the Earth's Interior & Tectonophysics | |
| Session ID | S-IT22 | |
| Title | Interaction and Coevolution of the Core and Mantle in the Earth and Planets | |
| Short Title | Core-mantle coevolution | |
| Main Convener | Name | Tsuyoshi Iizuka |
| Affiliation | University of Tokyo | |
| Co-Convener 1 | Name | Hidetoshi Shibuya |
| Affiliation | Department of Earth and Environmental Sciences, Faculty of Advanced Science and Technology, Kumamoto University | |
| Co-Convener 2 | Name | Taku Tsuchiya |
| Affiliation | Geodynamics Research Center, Ehime University | |
| Co-Convener 3 | Name | Kenji Ohta |
| Affiliation | Department of Earth and Planetary Sciences, Tokyo Institute of Technology | |
| Session Language | EE | |
| Scope | Recent observational and experimental investigations have significantly advanced our understanding of the structure and constituent materials of the deep Earth. Yet, even fundamental properties intimately linked with formation and evolution of the planet, such as details of the chemical heterogeneity in the mantle and light elements dissolved in the core, remained unclear. Seismological evidence has suggested a vigorous convection in the lower mantle, whereas geochemistry has suggested the presence of stable regions there that hold ancient chemical signatures. The amounts of radioactive isotopes that act as heat sources and drive dynamic behaviors of the deep Earth are also still largely unknown. We provide an opportunity to exchange the achievements and ideas, and encourage persons who try to elucidate these unsolved issues of the core-mantle evolution using various methods, including high-pressure and high-temperature experiments, high-precision geochemical and paleomagnetic analyses, high-resolution geophysical observations, geo-neutrino observations, and large-scale numerical simulations. Since this session is co-sponsored by geomagnetism, paleomagnetism and rock magnetism division of the SGEPSS, contributions in geomagnetism and geodynamo simulation are also encouraged. | |
| Presentation Format | Oral and Poster presentation | |
| Joint Session with | AGU | |
| Co-Sponsoring Societies (Society Members) | Society of Geomagnetism and Earth, Planetary and Space Sciences | |
| Invited Authors |
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| Time | Presentation No | Title | Presenter | Abstract |
|---|---|---|---|---|
| Oral Presentation May 22 PM1 | ||||
| 13:45 - 14:00 | SIT22-01 | S-velocity structure of the mantle transition zone beneath the Northwestern Pacific inferred from waveform inversion and its geophysical interpretation | Lina Yamaya | Abstract |
| 14:00 - 14:15 | SIT22-02 | First principles determination of the stability field of the phase H (MgSiO4H2) at lower mantle conditions | Jun Tsuchiya | Abstract |
| 14:15 - 14:30 | SIT22-03 | Correlation between structure and elastic wave velocity of pyrope glass at high pressure | Naoki Hisano | Abstract |
| 14:30 - 14:45 | SIT22-04 | Crystallographic-preferred orientation of MnGeO3 perovskite | Yu Nishihara | Abstract |
| 14:45 - 15:00 | SIT22-05 | Deformation experiments of mixture of bridgmanite and ferropericlase using rotational diamond anvil cell | Shintaro Azuma | Abstract |
| 15:00 - 15:15 | SIT22-06 | Waveform inversion for 3-D S-wave velocity structure of the D″ region beneath Eurasia | Tsubasa Ue | Abstract |
| Oral Presentation May 22 PM2 | ||||
| 15:30 - 15:45 | SIT22-07 | 3-D S-velocity structure in the lowermost mantle beneath the Northern Pacific | Yuki Suzuki | Abstract |
| 15:45 - 16:00 | SIT22-08 | Waveform inversion for localized 3-D shear velocity structure in the lowermost mantle beneath Caroline hotspot | Shota Kato | Abstract |
| 16:00 - 16:15 | SIT22-09 | Viscosity of depolymerized silicate melt and magma in the Earth’s deep interior | Akio Suzuki | Abstract |
| 16:15 - 16:30 | SIT22-10 | Sound velocities of CaSiO3 perovskite and some implications for deep mantle mineralogy | Tetsuo Irifune | Abstract |
| 16:30 - 16:45 | SIT22-11 | Diffusion mechanisms of creep and grain growth of two-phase polymineralic rocks: Constraints on grain size and viscosity of the lower mantle | Atsuro Okamoto | Abstract |
| 16:45 - 17:00 | SIT22-12 | Geo-neutrino measurement with KamLAND | Yutaka Shirahata | Abstract |
| Oral Presentation May 23 AM1 | ||||
| 09:00 - 09:15 | SIT22-13 | Phonon energies and lifetimes of MgO at high temperature: Implications for thermal conductivity | Daniele Antonangeli | Abstract |
| 09:15 - 09:30 | SIT22-14 | Implication of the B1-B2 phase transition on MgO diffusion properties in super-Earth mantles | Sebastian Ritterbex | Abstract |
| 09:30 - 09:45 | SIT22-15 | Effects of iron on the lattice thermal conductivity of lower mantle minerals evaluated by Ab initio anharmonic lattice dynamics simulations | Haruhiko Dekura | Abstract |
| 09:45 - 10:00 | SIT22-16 | Silicate melt viscosities at high pressure: Experimental results and its implication | Longjian Xie | Abstract |
| 10:00 - 10:15 | SIT22-17 | Origin of geochemical mantle components: Role of spreading ridges and thermal evolution of mantle | Jun-Ichi Kimura | Abstract |
| 10:15 - 10:30 | SIT22-18 | Trace element and W isotope systematics of acid-washed Archean meta-basalts | Hatsuki Enomoto | Abstract |
| Oral Presentation May 23 AM2 | ||||
| 10:45 - 11:00 | SIT22-19 | Experimental study on penetration of molten iron alloy into the lower mantle phase | Takashi Yoshino | Abstract |
| 11:00 - 11:15 | SIT22-20 | Hf-W chronology of the Brenham pallasite | Yoshitaka Homma | Abstract |
| 11:15 - 11:30 | SIT22-21 | He and Ar partitioning between liquid iron and molten silicate at high pressure | Taku Tsuchiya | Abstract |
| 11:30 - 11:45 | SIT22-22 | Determination of the noble gas partition coefficients between metal-silicate melts by high-pressure, high-temperature experiments and laser-microprobe noble gas analysis | Hirochika Sumino | Abstract |
| 11:45 - 12:00 | SIT22-23 | Metal-siliacte partitioning of carbon in a shallow magma ocean: Implications for the distribution of carbon in the Earth during core formation | Hideharu Kuwahara | Abstract |
| 12:00 - 12:15 | SIT22-24 | Effects of light elements on transport properties of liquid Fe alloys under high pressure. | Satoshi Ohmura | Abstract |
| Oral Presentation May 23 PM1 | ||||
| 13:45 - 14:00 | SIT22-25 | Composition of the outermost outer core estimated from thermoelastic properties of liquid Fe alloys | Hiroki Ichikawa | Abstract |
| 14:00 - 14:15 | SIT22-26 | Melting experiments on Fe–Si–S alloys to core pressures: Silicon in the core? | Shigehiko Tateno | Abstract |
| 14:15 - 14:30 | SIT22-27 | Effect of silicon on viscosity of ε-iron | Daisuke Yamazaki | Abstract |
| 14:30 - 14:45 | SIT22-28 | High-P,T Easticity of Fe-Si and Fe-S Alloys | Taku Tsuchiya | Abstract |
| 14:45 - 15:00 | SIT22-29 | Ab-initio study of Earth’s inner core diffusion properties and the effect of light elements | Sebastian Ritterbex | Abstract |
| 15:00 - 15:15 | SIT22-30 | Impurity resistivity of fcc and hcp Fe-based alloys: Geodynamo energy balance in super-Earths | Hitoshi Gomi | Abstract |
| Oral Presentation May 24 AM1 | ||||
| 09:00 - 09:15 | SIT22-31 | Ediacaran ultra-low geomagnetic field intensity: Evidence for a young inner core | John Anthony Tarduno | Abstract |
| 09:15 - 09:30 | SIT22-32 | Anisotropic thermal conductivity of hcp iron and the implications for the Earth’s inner core | Kenji Ohta | Abstract |
| 09:30 - 09:45 | SIT22-33 | Towards revealing geomagnetic secular variations in numerical dymamo simulations with thermal heterogeneity in the plate-mantle system | Takashi Nakagawa | Abstract |
| 09:45 - 10:00 | SIT22-34 | Rapid fluctuations of Earth’s outer core – Towards a better detection with ground-based magnetic observations | Seiki Asari | Abstract |
| 10:00 - 10:15 | SIT22-35 | Temperature perturbation at ICB induced by CMB heat flux variation in numerical dynamos | Hiroaki Matsui | Abstract |
| 10:15 - 10:30 | SIT22-36 | Effects of core electrical conductivity on core surface flow models | Masaki Matsushima | Abstract |
| Oral Presentation May 24 AM2 | ||||
| 10:45 - 11:00 | SIT22-37 | Ultra-high-resolution evidence for transitional field behaviour during a geomagnetic polarity reversal | Andrew P Roberts | Abstract |
| 11:00 - 11:15 | SIT22-38 | High resolution paleomagnetic secular variation records from Lake Biwa and its implications on core dynamics | Hirokuni Oda | Abstract |
| 11:15 - 11:30 | SIT22-39 | Strength of the geomagnetic field during the Holocene deduced from the surface lavas on the island of Hawaii | Yuhji Yamamoto | Abstract |
| 11:30 - 11:45 | SIT22-40 | Paleointensity experiments on single crystals separated from the middle Cretaceous Iritono granite | Chie Kato | Abstract |
| 11:45 - 12:00 | SIT22-41 | Holocene paleomagnetic secular variation at Fuji volcano, Japan | Akira Baba | Abstract |
| 12:00 - 12:15 | SIT22-42 | Paleomagnetic Directions of 3-5ka Basaltic Volcanoes in the Aso Central Cone, Kyushu Japan: Further Extension of the Paleosecular Variation Curve. | Hidetoshi Shibuya | Abstract |
| Presentation No | Title | Presenter | Abstract |
|---|---|---|---|
| Poster Presentation May 22 Core Time | |||
| SIT22-P01 | Waveform inversion for the 3-D S-velocity structure of the mantle transition zone beneath Central America using USArray data | Anselme F. E. Borgeaud | Abstract |
| SIT22-P02 | Observation of multipathing at the western edge of the Pacific Large Low-Shear-Velocity Province | Sunil K. Roy | Abstract |
| SIT22-P03 | Phase relations in the Fe-Ni-Si system at high pressures and high temperatures | Daijo Ikuta | Abstract |
| SIT22-P04 | High pressure generation up to 24 gigapascals using a D-DIA apparatus combined with jacketed anvils | Tomohiro Ohuchi | Abstract |
| SIT22-P05 | Thermal conductivity and compressibility of iron and aluminum-bearing bridgmanite: implications for spin-crossover of iron | Yoshiyuki Okuda | Abstract |
| SIT22-P06 | Sound velocity measurements on bridgmanite at lower mantle pressures | Tatsuya Wakamatsu | Abstract |
| SIT22-P07 | Lattice thermal conductivity of (Mg,Fe)O | Akira Hasegawa | Abstract |
| SIT22-P08 | Development of electric furnace designed for density measurement of metals | Asaka Kamiya | Abstract |
| SIT22-P09 | Stability of hydrous aluminosilicates at the transition zone and the lower mantle | Akio Suzuki | Abstract |
| SIT22-P10 | Thermal equations of state of MgSiO4H2 phase H up to 63 GPa determined by in situ X-ray diffraction measurement in a multianvil apparatus | Masayuki Nishi | Abstract |
| SIT22-P11 | Light element distribution produced by convection due to CMB heterogeneity in the outer core of the Earth | Youhei SASAKI | Abstract |
| SIT22-P12 | Kinematic dynamos associated with top-down and bottom-up convection in rotating spherical shells | Hinami Taniguchi | Abstract |
| SIT22-P13 | A preliminary model for S-wave velocity structure in the D˝ region beneath New Guinea by using Thai Seismic Array (TSAR) | Satoru Tanaka | Abstract |
| SIT22-P14 | Multiple sulfur isotope analytical system using IRMS MAT-253 for high pressure experimental run products | Madhusoodhan Satish-Kumar | Abstract |
| SIT22-P15 | Melting of iron to 290 gigapascals | Ryosuke Sinmyo | Abstract |
| SIT22-P16 | Dissolution of multi light elements in iron-silicate system using high pressure and high temperature experiments: Implications for the Earth's evolution | Riko Iizuka-Oku | Abstract |
| SIT22-P17 | Ab initio lattice thermal conductivity of MgSiO3 post-perovskite | Haruhiko Dekura | Abstract |
| SIT22-P18 | First-principles study on the site occupancy of Fe3+ in ferropericlase (Mg,Fe)O | Hokai Fujitani | Abstract |
| SIT22-P19 | High P-T electrical resistivity measurements on iron in an internally-heated diamond anvil cell | Sho Suehiro | Abstract |
| SIT22-P20 | Grain-size evolution and rheology of the lower mantle | Masahiro Imamura | Abstract |
| SIT22-P21 | Quatitative isotope imaging methods using secondary ion mass spectrometry | Shoichi Itoh | Abstract |
| SIT22-P22 | Sub-µm-scale investigations for metasomatic PGM–BMS inclusion in Tahitian harzburgite xenolith | Norikatsu Akizawa | Abstract |
| SIT22-P23 | Recycled Archean sulfur in the mantle wedge of the Mariana Forearc | Shinnosuke Aoyama | Abstract |
| SIT22-P24 | Development of New Technology for Geoneutrino Directional Measurement | Hiroko Watanabe | Abstract |
| SIT22-P25 | U, Th concentration database of basement rocks of Japanese islands with accurate location coordinates for geoneutrino modeling | Kenta Ueki | Abstract |
| SIT22-P26 | Heat flow determination in the central part of Japan | Hideki Hamamoto | Abstract |
| SIT22-P27 | The evaluation of the compositional variation in a single rock suite revealed by grid sampling toward improving the accuracy of geoneutrino flux |
Minami Kazuki | Abstract |
| SIT22-P28 | Zr isotope constraints on early Earth differentiation | Tsuyoshi Iizuka | Abstract |
| SIT22-P29 | Rock-magnetic properties of single zircon crystals sampled from the Yangtze River and the Mississippi River | Masahiko Sato | Abstract |
| SIT22-P30 | High precision 182W/183W isotopic compositions of terrestrial samples | Katsuhiko Suzuki | Abstract |
| SIT22-P31 | Magnetic mineral inclusions in single zircon crystals from the Tanzawa tonalite and the river of Yangtze and Mississippi | Shinji Yamamoto | Abstract |
| SIT22-P32 | Study of the required Rayleigh number to sustain geodynamo with various inner core radius | Nishida Yuki | Abstract |
| SIT22-P33 | On the geomagnetic direction changes and time constant of the core inferred from the geomagnetic secular variations | Tadahiro Hatakeyama | Abstract |
| SIT22-P34 | Paleomagnetic and rock magnetic results from 17-22 ka sediment of Jeju Island, Korea: Excursional behavior of the geomagnetic field or rock magnetic anomalies? | Hyeon-Seon Ahn | Abstract |
| SIT22-P35 | The effect of an azimuthal background magnetic field on waves in a stably stratified layer at the top of the Earth's outer core | Ryosuke Nakashima | Abstract |
| SIT22-P36 | Discussion | Taku Tsuchiya | Abstract |
| SIT22-P37 | Discussion | Kenji Ohta | Abstract |
| SIT22-P38 | Discussion | Tsuyoshi Iizuka | Abstract |
| SIT22-P39 | A variety of Thellier behaviors from vertical sections of an obsidian-rhyolite complex | Koji Fukuma | Abstract |