シャトルのレーダーによって明らかにされた,サハラ東部の地下渓谷と地質考古学
Science (New York, N.Y.)
|December 3, 1982
まとめ
シャトル画像レーダーA (SIR-A) は,サハラ砂漠の下の埋もれた古代の川渓谷と地質学的構造を明らかにしました.
科学分野:
- 地質学 地質学 地質学
- 考古学考古学とは
- リモートセンシング (リモートセンサー)
背景:
- 東サハラのセリマ砂層は,広大な古代の風景を覆っています.
- 地下地質を理解することは,地域史を解釈する上で極めて重要です.
研究 の 目的:
- レーダー画像を用いて,サハラ砂漠の埋もれた地質学的特徴と潜在的な石器時代の遺跡を調査する.
- シャトル画像レーダー-A (SIR-A) の超乾燥環境における地下探査の能力を評価する.
主な方法:
- シャトル画像レーダーA (SIR-A) データは1981年11月に取得された.
- 砂の覆いの下にある岩盤と砂利の表面からのレーダー応答を分析した.
- レーダーの発見と地質学的,考古学的証拠との相関関係.
主要な成果:
- SIR-Aは乾いた砂に浸透し,埋もれた渓谷,地質構造,そして石器時代の遺跡を明らかにした.
- 古代の河川系を特定し,その一部はナイル川渓谷ほどの広さで,おそらく中期三次時代に遡る.
- 四季期のワディと関連する石器時代の遺物が発見され,これらの特徴の近くで過去の人間の占領を示しています.
結論:
- SIR-Aは,地下の排水網を効果的にマッピングし,現代のオアシやプレアスの位置を説明しました.
- 乾燥した砂のレーダーの浸透深さは5メートルを超え,超乾燥地帯の探査のためのSIR-Aの有用性を検証します.
- この研究は,隠された地質学的および考古学的記録を発見するためのレーダー遠隔感知の可能性を強調しています.
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