講演名 2005/2/3
Development of a TDEM Data Acquisition System Based on a SQUID Magnetometer for Mineral Exploration
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抄録(和)
抄録(英) We report on the research and development of a TDEM data acquisition system (SQUITEM) by JOGMEC using a highly sensitive high-temperature superconductor (HTS) SQUID vector magnetometer cooled by liquid nitrogen, which is suitable for mineral exploration. JOGMEC has achieved stable operation of all three channels during field tests. SQUITEM meets high requirements for slew rate (6.8mT/s), dynamic range (100dB) and bandwidth (DC-100kHz). It offers deeper penetration of depth than the conventional induction coil system because it can record the step response that decreases with time slower than the impulse response of the induction coil system. SQUITEM also performs horizontal gradient observations that can provide much better resolution of shallow conductive targets than conventional TDEM observations. We have obtained good reproducibility of SQUID data and correlation between the output signals of the reference induction coils and the derivatives of the SQUID signals in TDEM field tests.
キーワード(和)
キーワード(英) HTS SQUID / TDEM / mineral exploration
資料番号 SCE2004-37
発行日

研究会情報
研究会 SCE
開催期間 2005/2/3(から1日開催)
開催地(和)
開催地(英)
テーマ(和)
テーマ(英)
委員長氏名(和)
委員長氏名(英)
副委員長氏名(和)
副委員長氏名(英)
幹事氏名(和)
幹事氏名(英)
幹事補佐氏名(和)
幹事補佐氏名(英)

講演論文情報詳細
申込み研究会 Superconductive Electronics (SCE)
本文の言語 ENG
タイトル(和)
サブタイトル(和)
タイトル(英) Development of a TDEM Data Acquisition System Based on a SQUID Magnetometer for Mineral Exploration
サブタイトル(和)
キーワード(1)(和/英) / HTS SQUID
第 1 著者 氏名(和/英) / Eiichi ARAI
第 1 著者 所属(和/英)
Metals Exploration Group, Japan Oil, Gas and Metals National Corporation
発表年月日 2005/2/3
資料番号 SCE2004-37
巻番号(vol) vol.104
号番号(no) 655
ページ範囲 pp.-
ページ数 6
発行日