Talk 1 (15:00-16:00)

Title: Overview of Science and Observation of NASA InSight Mission
Speaker: Taichi Kawamura (National Observatory of Japan)

Abstract:
Mars have been attracting wide interests of planetary scientists for decades.While large varieties of observations uncovered the nature of the planet, its inner structure still remains a mystery. One of the reason for this is a lack of geophysical observations that provides quantitative constraints on its interior. NASA InSight aims to establish the first geophysical station on Mars. The geophysical station includes a seismometer, a heat flow probe, and other enviornmental sensors that were designed to quantify the observation condition for the two main instruments. In this presentation, I will start with a general introduction of the mission and observation we are aiming during the science mission phase. Then I will focus on seismological observation and investigation we are planning and discuss how we will probe the sub-surface and deep interior of Mars with seismology.

Talk 2 (16:00-17:00)

Title: Rootless cones in Myvatn, Iceland, as terrestrial analog cones of Central Elysium Planitia, Mars
Speaker: Rina Noguchi (Tokyo Institute of Technology)

Abstract:
In this talk, I focus on the geological settings of Central Elysium Planitia (CEP), which is suspected as a site of the latest magmatism on Mars. About the origin of extremely flat plain in this area, hot debate has grown: lava flows or aqueous floods, which would lead to completely different contexts in the evolution of Mars. Conical mounds pervasively exist in CEP (hereafter CEP cones) are a key to resolve this controversy.
This study turns the spotlight on unique morphological features of CEP cones: double cones (DCs) and multiple cones (MCs). In general, CEP cones have a simple structure: a conical edifice with a summit crater. However, DCs and MCs have (an) inner cone(s) inside the summit crater. To fill shortage of the data inherently existed in planetary data, I have explored the terrestrial analogues. Among the terrestrial cone fields, there exist DCs- and MCs-like cones in Myvatn, Iceland. Cones in Myvatn are rootless cones, which were formed by an interaction between lava and waterlogged sediments. Though previous studies mentioned the existence of Myvatn double rootless cones, there is no quantitative morphological data, which could help interpretation of CEP cones through comparison. Moreover, its formation mechanism has not been clarified.
In order to overcome this issue, I performed a field campaign in Myvatn. I will introduce the in situ survey in Iceland, then show a possible formation scenario for double rootless cones. At the end, I characterize the recent geologic activity in CEP, Mars.