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Updated: Jul 12, 2026

11:34
Scattering And Absorption of Light in Planetary Regoliths
Published on: July 1, 2019
隕石が地球に落ちる頻度は,地球に落ちる頻度です
まとめ
この研究では,カメラのデータを用いて隕石の落下率を推定し,年間100万平方キロメートルあたり8個の1キログラムの隕石が落下することを発見しました. インストゥルメンタルデータは,地球への隕石流入に関する新しい洞察を提供します.
科学分野:
- 地質物理学 地質物理学とは地質物理学です.
- 惑星科学は惑星科学である.
- 天文学 天文学
背景:
- 隕石の流入を推定することは,地球の爆撃の歴史を理解するために非常に重要です.
- 以前の推定は,より直接的な方法に頼っていた.
- インストゥルメンタルデータは,隕石の落下を定量化するための新しいアプローチを提供します.
研究 の 目的:
- 仪器用写真データを用いて,隕石の地球表面への流入率を決定する.
- 隕石着陸イベントの定量的な基準を確立する.
主な方法:
- カナダ西部の60台のカメラのネットワークから撮影した写真の観測を活用した.
- 43の観測出来事を分析して隕石の質量 (0.112 kg) を推定した.
- 緯度効果のために修正された流量値.
主要な成果:
- 隕石流入速度の最初の楽器による推定を導いた.
- 1年に約8件の隕石が10^6km^2.0あたり少なくとも1kgの隕石を落とし,2年に約8回の隕石が落とし,2年に少なくとも1kgの隕石を落とし,
- 観測された流量値は,10kgに近い以前の推定値と一致しているが,質量の変動が遅いことを示している.
結論:
- 楽器データは,隕石の落下率を評価するためのより正確な方法を提供します.
- 導出された流速は,隕石の衝突頻度の精密な理解を提供します.
- 発見は惑星防衛と太陽系物質の研究に寄与する.
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