Study on surface dielectric property for thin first year ice

• Project/Area Number: 26340013
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Environmental dynamic analysis
• Research Institution: Nihon University
• Principal Investigator: NAKAMURA Kazuki 日本大学, 工学部, 准教授 (60435500)
• Co-Investigator(Kenkyū-buntansha): 舘山 一孝 北見工業大学, 工学部, 准教授 (30374789)
• Co-Investigator(Renkei-kenkyūsha): MORIYAMA Toshifumi 長崎大学, 大学院・工学研究科, 准教授 (20452873)
• Research Collaborator: TOMURA Yoshimi ; MORI Yuta ; YAMAKAWA Koichi ; TANAKA Tomoyuki ; NISHITO Yoshihiro ; IKEURA Tomoaki ; TERUI Takaaki ; YAKUWA Kyohei ; HOSHINO Seita ; KITA Momoi
• Project Period (FY): 2014-04-01 – 2017-03-31
• Project Status: Completed (Fiscal Year 2016)
• Budget Amount: ¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000); Fiscal Year 2016: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000); Fiscal Year 2015: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000); Fiscal Year 2014: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
• Keywords: オホーツク海 / サロマ湖 / 一年氷 / 氷厚 / 誘電率 / マイクロ波

Outline of Final Research Achievements

The estimation of ice thickness using Synthetic Aperture Radar (SAR) data needs to precisely extract the dielectric constants of ice surface derived from its backscattering coefficient. However, the direct obaservation of dielectric constant is difficult for in-situ measurement outsides because an instrument to measure is expensive and less portability of conventional one. We recently can choose a portable Vector Network Analyzer (VNA) for outside measurements with carrying easily. The microwave measurement method of dielectric constants based on free space method can be considered to be applied to targets of snow and ice. Therefore, this study eastablished a system for dielectric constants measurement which was used portable VNA and with free space method. Our system was applied to measurements the dielectric constants of sea ice surface directly, and the results showed reasonable estimations of dielectric constants.

Research Products

• [Journal Article] 薄い一年氷における誘電率の直接計測手法の検討 (2017)
  • Author(s): 中村和樹、森山敏文、長康平
  • Journal Title: 雪氷（日本雪氷学会誌） Volume: 79 Pages: 73-81
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] 橇搭載型電磁誘導式氷厚計を用いたサロマ湖氷厚の測定に関する研究 (2016)
  • Author(s): 北桃生、舘山一孝、星野聖太、中村和樹、牛尾収輝
  • Journal Title: 北海道の雪氷 Volume: 35 Pages: 111-114
• [Presentation] The Measurement of Ice Thickness using An Electromagnetic Induction Device onboard A Sled in Saroma-ko Lagoon (2017)
  • Author(s): Momoi Kita, Kazutaka Tateyama, Seita Hoshino and Kazuki Nakamura
  • Organizer: 北方圏国際シンポジウム
  • Place of Presentation: 紋別市民会館（北海道紋別市）
  • Year and Date: 2017-02-21
  • Int'l Joint Research
• [Presentation] Development of Accurate Ice Observation Technologies and Ice Database for Oil & Gas Development in Arctic Region : 2nd Report Summary of the R&D results (2017)
  • Author(s): Shotaro Uto, Takatoshi Matsuzawa, Kenta Hasegawa and Koh Izumiyama, Kazutaka Tateyama, Kazuki Nakamura, Chang‐kyu Rheem, Akira Asada, Joji Yamamoto and Takayuki Asanuma
  • Organizer: 北方圏国際シンポジウム
  • Place of Presentation: 紋別市民会館（北海道紋別市）
  • Year and Date: 2017-02-20
  • Int'l Joint Research
• [Presentation] 2016年のサロマ湖氷の観測 (2016)
  • Author(s): 中村和樹、森山敏文、長康平、舘山一孝
  • Organizer: 日本雪氷学会
  • Place of Presentation: 名古屋大学（愛知県名古屋市）
  • Year and Date: 2016-09-30
• [Presentation] 橇搭載型電磁誘導式氷厚計を用いたサロマ湖氷厚の測定に関する研究 (2016)
  • Author(s): 北桃生、舘山一孝、星野聖太、中村和樹、牛尾収輝
  • Organizer: 日本雪氷学会北海道支部
  • Place of Presentation: 北海道大学（北海道札幌市）
  • Year and Date: 2016-05-14
• [Presentation] 2015年におけるサロマ湖氷の誘電率計測 (2015)
  • Author(s): 中村和樹, 森山俊文, 長康平
  • Organizer: 日本リモートセンシング学会
  • Place of Presentation: 長崎県長崎市（長崎大学）
  • Year and Date: 2015-11-26
• [Presentation] 橇搭載型電磁誘導式氷厚計を用いたサロマ湖広域氷厚観測 (2014)
  • Author(s): 舘山一孝, 中村和樹, 星野聖太
  • Organizer: 雪氷研究大会（2014・八戸）, 日本雪氷学会
  • Place of Presentation: 八戸工業大学（青森県八戸市）
  • Year and Date: 2014-09-21
• [Presentation] 2014年のサロマ湖氷の観測 (2014)
  • Author(s): 中村和樹, 舘山一孝, 若林裕之
  • Organizer: 雪氷研究大会（2014・八戸）, 日本雪氷学会
  • Place of Presentation: 八戸工業大学（青森県八戸市）
  • Year and Date: 2014-09-21
• [Presentation] 合成開口レーダとその利用について (2014)
  • Author(s): 中村和樹
  • Organizer: 雪氷研究大会（2014・八戸）衛星観測分科会, 日本雪氷学会
  • Place of Presentation: 八戸工業大学（青森県八戸市）
  • Year and Date: 2014-09-20
• [Remarks] VNAによる海氷の誘電率計測と厚さ情報抽出の研究
  • URL: http://www.cs.ce.nihon-u.ac.jp/~nakamura/Study.html