Supplement to the model of gravity change due to thermal expansion source

Abstract

 Kitsunezaki (2015) proposed a theoretical model on gravity change due to thermal expansion source. Some basic problems could not be discussed sufficiently there. In this paper, we systematically supplement them in two issues. The first issue is gravity change due to a minute expansion source in a semi-infinite elastic solid. The second issue is gravity change due to a minute thermal expansion source in a semi-infinite permeable water-saturated porous medium. At first, outline of analysis process of the first issue is illustrated to make clear its basic concept, following Hagiwara (1977). This provides a base to solve the second issue. An incorrect expression in the former paper is also revised in the discussion of the second issue.