open access

https://doi.org/10.14943/lowtemsci.76.269

https://hdl.handle.net/2115/70340

Acoustic mapping of the seafloor features : Implication for global environmental change

日本語

Global environmental change

2018-03-31

低温科学第76巻編集委員会

Low Temperature Science

76

269-284

The seafloor covers more than 70 percent of the solid-earth surface, however most parts have not been explored because of observation difficulty. Significant records of paleo glacial erosion and submarine volcanism as well as continental breakup and seafloor spreading are preserved in the seafloor. Here, we review the progressive development of the acoustic ranging for understanding the Earth seafloor bathymetry and its application examples in the polar oceans. In addition, we mention the importance of high-resolution acoustic mapping under sea ice and ice shelf, by introducing the Antarctic studies, which utilized unmanned underwater vehicles. Finally, we take notice of the circum-Antarctic mid-ocean ridges, where submarine volcanism releases much heat and materials through magma eruption and hydrothermal circulation, and discuss future exploration plans for revealing their linkage to global environmental change.

紀要論文

Version of Record

1880-7593

AA12122962