Isamu Matsuyama

TL;DR: In this paper, a new treatment of the linearized Euler equations governing load-induced rotation perturbations on viscoelastic earth models was proposed, in which the background form of the planet combines a hydrostatic component and an observationally inferred excess ellipticity.

TL;DR: It is shown that the long-wavelength topography of the shorelines is consistent with deformation caused bytrue polar wander—a change in the orientation of a planet with respect to its rotation pole—and that the inferred pole path has the geometry expected for a true polar wander event that postdates the formation of the massive Tharsis volcanic rise.

TL;DR: In this article, the authors used the Gravity Recovery and Interior Laboratory (GRAIL) data to determine the gravity coefficients J2 and C22 and the Love number k2 describing the elastic response to tidal forces.

TL;DR: The Moon's gravity map shows that the crust is cut by extensive magmatic dikes, perhaps implying a period of early expansion, and application of gravity gradiometry to observations by the GRAIL mission results in the identification of a population of linear gravity anomalies with lengths of hundreds of kilometers.

TL;DR: In this paper, the authors studied the evolution of a stellar disk under the influence of viscous evolution, photoevaporation from the central source, and photo evaporation by external stars.