衛星 の 地図 に よる と,海 に 広範囲 の 産業 活動 が 行なわ れ て いる
Fernando S Paolo1, David Kroodsma2, Jennifer Raynor3
1Global Fishing Watch, Washington, DC, USA. fernando@globalfishingwatch.org.
Nature
|January 3, 2024
まとめ
海上での多くの産業漁業と船舶活動は,特にアフリカとアジアの近くで,公共の追跡が欠如しています. COVID-19の間,世界の漁業は減少したが,輸送とエネルギー活動は安定した.
科学分野:
- 海洋科学
- 海洋学
- 海事問題
背景:
- 海は世界の食糧,エネルギー,貿易に不可欠です.
- 海洋における人間の活動は非常に重要ですが 定量化されていないのです
- 海洋の持続可能な管理には 海洋活動の正確な地図作成が不可欠です
研究 の 目的:
- 産業用船舶の活動と海上エネルギーインフラをマッピングする.
- 記録されていない海上活動の規模を定量化する.
- 海洋産業に及ぼすCOVID-19の影響を分析する.
主な方法:
- 衛星画像と船のGPSデータを統合する.
- アクティビティマッピングのためのディープラーニングモデルの適用
- 2017年から2021年の海事データの分析
主要な成果:
- 産業用漁船の72~76%と 輸送/エネルギー船の21~30%は 公開されていない.
- 南アジア,東南アジア,アフリカ近郊で記録されていない漁業が多い.
- 世界的な漁業はCOVID-19の間,12%減少し,回復が遅かった.輸送/エネルギー部門は影響を受けなかった.
- 海上風力発電のインフラストラクチャは急速に成長し,2021年までに石油構造物を上回った.
結論:
- 産業用海事活動の大部分は 公共の追跡システム外で行われています
- COVID-19の流行は,海洋ベースの産業に差異的な影響を及ぼしました.
- この研究は,海洋産業化の包括的な地図を提供し,海での人間の活動における重要な変化を強調しています.
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