Proceedings of the NIPR Symposium on Antarctic …, Jan 1, 1989
Implantation of the ancent solar wind is a possible noble gas source for Venus and gas-rich meteo... more Implantation of the ancent solar wind is a possible noble gas source for Venus and gas-rich meteorites. During the stage of planetary accretion, dust grains re-emitted by planetesimal collisions could be targets of the solar wind implantation. The present study shows that such off-disk ...
The radiogenic noble gas species He, Ar, and Xe in the atmosphere of the terrestrial planets prov... more The radiogenic noble gas species He, Ar, and Xe in the atmosphere of the terrestrial planets provide valuable information on planetary degassing history. The abundance of radiogenic fraction of Martian atmospheric Xe relative to the total planetary mass suggests that early ...
We estimate the orientations of crustal stress on Venus from surface geometry of dike swarms asso... more We estimate the orientations of crustal stress on Venus from surface geometry of dike swarms associated with volcanoes. The inferred stress field sometimes has various orientations even in the same region. Using lava stratigraphy, volcanoes in the Beta‐Atla‐Themis (BAT) ...
Abstract We have newly developed a scheme for estimating the degree of space weathering which is ... more Abstract We have newly developed a scheme for estimating the degree of space weathering which is more free from effects of grain size and viewing geometry, utilizing the spectral inflections at around 0.4 and 0.55 µm. It is very useful for planetary remote sensing ...
Which mechanism determines the planetary atmospheric inventories of various gases is an important... more Which mechanism determines the planetary atmospheric inventories of various gases is an important problem. It has been suggested that Venus' atmospheric CO 2 abundance is controlled or buffered by carbonation reaction on the surface (carbonate buffer). According to this hypothesis, ...
Accurate estimates of the duration and volume of extrusive volcanism of the Moon are essential fo... more Accurate estimates of the duration and volume of extrusive volcanism of the Moon are essential for understanding the lunar thermal evolution. Here, using new high-resolution images obtained by the SELENE Terrain Camera, we determined the thicknesses and ...
Proceedings of the NIPR Symposium on Antarctic …, Jan 1, 1989
Implantation of the ancent solar wind is a possible noble gas source for Venus and gas-rich meteo... more Implantation of the ancent solar wind is a possible noble gas source for Venus and gas-rich meteorites. During the stage of planetary accretion, dust grains re-emitted by planetesimal collisions could be targets of the solar wind implantation. The present study shows that such off-disk ...
The radiogenic noble gas species He, Ar, and Xe in the atmosphere of the terrestrial planets prov... more The radiogenic noble gas species He, Ar, and Xe in the atmosphere of the terrestrial planets provide valuable information on planetary degassing history. The abundance of radiogenic fraction of Martian atmospheric Xe relative to the total planetary mass suggests that early ...
We estimate the orientations of crustal stress on Venus from surface geometry of dike swarms asso... more We estimate the orientations of crustal stress on Venus from surface geometry of dike swarms associated with volcanoes. The inferred stress field sometimes has various orientations even in the same region. Using lava stratigraphy, volcanoes in the Beta‐Atla‐Themis (BAT) ...
Abstract We have newly developed a scheme for estimating the degree of space weathering which is ... more Abstract We have newly developed a scheme for estimating the degree of space weathering which is more free from effects of grain size and viewing geometry, utilizing the spectral inflections at around 0.4 and 0.55 µm. It is very useful for planetary remote sensing ...
Which mechanism determines the planetary atmospheric inventories of various gases is an important... more Which mechanism determines the planetary atmospheric inventories of various gases is an important problem. It has been suggested that Venus' atmospheric CO 2 abundance is controlled or buffered by carbonation reaction on the surface (carbonate buffer). According to this hypothesis, ...
Accurate estimates of the duration and volume of extrusive volcanism of the Moon are essential fo... more Accurate estimates of the duration and volume of extrusive volcanism of the Moon are essential for understanding the lunar thermal evolution. Here, using new high-resolution images obtained by the SELENE Terrain Camera, we determined the thicknesses and ...
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