Analysis of Sand Movement on Noto Coast by Geochemical Method

by Kazumasa Mizumura, Kanazawa Inst of Technology, Ishikawa, Japan,
Toshiharu Nishimoto, Kanazawa Inst of Technology, Ishikawa, Japan,
Takahiko Yamamoto, Kanazawa Inst of Technology, Ishikawa, Japan,

Abstract: The analysis of sand samples by X - ray fluorescent spectroscopy (abbreviated by XRF) gives the ratio of the geochemical elements to construct the sand samples. This shows the geochemical characteristics of sand in sampled area. In this study, sand is sampled on coast of Noto Peninsula and the geochemical elements to show the geological characteristics are found to be specially iron and calcium. Iron and calcium show the effect of rivers and Kotogahama beach, respectively. Applying the method of ratio matching to the measured data of the geochemical elements, the direction of sand movement on the coast is determined by considering the correlation matrix and the ratio of geochemical elements between two samples. The predominant direction of offshore sand movement in the study area is from south to north. Sand in rivers is not transported to neighboring beaches directly, but offshore sand is transported to beaches. The estimated direction of sand movement near coastal structures is found to be in good agreement with observations.

Subject Headings: Soil analysis | Sand (hydraulic) | Beaches | Sandy soils | Iron compounds | Calcium

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