JpGU-AGU Joint Meeting 2020

Presentation information

[J] Poster

O (Public ) » Public

[O-04] Poster presentations by senior high school students

convener:Tatsuhiko Hara(International Institute of Seismology and Earthquake Engineering, Building Research Institute), Katsuyoshi Michibayashi(Department of Earth and Planetary Sciences, Nagoya University), Miwa Kuri(Japan Meteorological Agency), Keiko Konya(Japan Agency for Marine-Earth Science and Technology)

[O04-P24] Specific heat of various soils measured by radiation thermometer

*Hayato Kurosawa1, Hiroto Ichikawa1 (1.Miyagi Rifu high school)

Keywords:Soil components, Heat capacity of the soils

The ground is composed of various substances. When the same amount of heat is applied, the temperature rises and falls differently. In order to mention the homeostacy of the environment or investigate the greenhouse effects, it is useful to compare the thermos-tendency, . When measuring the temperature, we measured the temperatures for several times under similar conditions using a infrared radiation thermometer.
When the sun is strong, the temperature changes greatly on asphalt and soil. Therefore, even if the same heat is applied, the way the temperature rises greatly differs depending on the soil and ground components. From this fact, it is considered that the various materials that make up the ground have different specific heats, so an investigation was conducted using a radiation thermometer (SK-8940, SATO).
The difference in heat capacity between asphalt and brick was small and the influence of external factors was small, but the difference in heat capacity between grassland, sand and soil was large. I thought that this might be influenced by external factors such as wind. To obtain the heat capacity of vegetated soil, and thus the specific heat, it will be necessary to measure under more stable conditions.