SEGJ Technical Conference

Preliminary results on the experimental survey of sublacustrine sediments under the ice by ground-penetrating radar and high-resolution acoustic survey in the Furen-ko lagoon, eastern Hokkaido

Abstract For the purpose of grasping a state of the fine grained sublacustrine sediments from the Furen River, We carried out high-resolution SBP and GPR investigations on the ice surface of Furen-ko lagoon in the winter, March 2014. Records of the length of 3.4km in total was provided and was able to compare the records of the GPR investigation with the plural acoustic reflectors on the SBP record sections. Furthermore, buried valley corresponding to a past riverbed was confirmed from GPR records on the Furen River. The exploration from the surface of ice is effective for the sediment investigation into in shallow lakes like the Furen-ko lagoon.