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

• Fujii Masakazu

• Nogi Yoshifumi

Bibliographic Information

Other Title

• 音波探査で海底を見る : 海底地形に記録された地球環境変動
• オンパ タンサ デ カイテイ オ ミル : カイテイ チケイ ニ キロク サレタ チキュウ カンキョウ ヘンドウ

Abstract

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.

Journal

• 低温科学

  低温科学 76 269-284, 2018-03-31

  低温科学第76巻編集委員会

Keywords

• Seafloor bathymetry
• Acoustic ranging
• Submarine glacial landform
• Submarine volcanism
• Global environmental change

Details

• CRID: 1390290699772211200
• NII Article ID: 120006466506
• NII Book ID: AA12122962
• DOI: 10.14943/lowtemsci.76.269
• HANDLE: 2115/70340
• NDL BIB ID: 031463557
• ISSN: 18807593
• Web Site: http://id.ndl.go.jp/bib/031463557
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I031463557
• Text Lang: ja
• Data Source:
  • JaLC
  • IRDB
  • NDL
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Allowed