{"created":"2023-06-20T14:38:15.855998+00:00","id":4774,"links":{},"metadata":{"_buckets":{"deposit":"ca655e22-f899-4c19-88c1-ba12cf473934"},"_deposit":{"created_by":1,"id":"4774","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"4774"},"status":"published"},"_oai":{"id":"oai:jaxa.repo.nii.ac.jp:00004774","sets":["1398:1501:1506","1543:1827:1832","1887:1891","9:789:920:926"]},"author_link":["21759","21758","21761","21762","21760","21763"],"item_5_alternative_title_2":{"attribute_name":"その他のタイトル（英）","attribute_value_mlt":[{"subitem_alternative_title":"On long term environment evolution of space debris by environment evolutionary 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(JAXA))","subitem_description_type":"Other"}]},"item_5_description_16":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"増加し続けるスペースデブリを抑制する手段としてデブリ低減策に関する議論が活発化してきている.その手法の例として他の宇宙機を用いて能動的にデブリ除去を行う(Active Debris Removal)や,衛星自身が墓場軌道へ移動して廃棄を行う(Post Mission Disposal)などが考えられている.しかしながら,これら低減策を軌道上で実施するには莫大なコストが予想されることに加え,技術的課題がいまだ山積みしており,実際に低減策を実施する前に長期間にわたる環境推移計算が可能である環境推移モデルを用いて,デブリの増殖抑制効果や他の軌道上物体に対する影響を評価する必要がある.環境推移モデルはデブリ問題を議論していく上で重要なモデルであるため,宇宙開発を進めている主要な国では独自のモデルを保有している.日本では低軌道の環境推移モデルであるLEODEEMと静止軌道の環境推移モデルであるGEODEEMを保有している.本発表ではこれらのモデルを用いてデブリ除去シナリオを行った場合における長期環境推移の計算結果について議論する.","subitem_description_type":"Abstract"}]},"item_5_description_18":{"attribute_name":"内容記述","attribute_value_mlt":[{"subitem_description":"形態: カラー図版あり","subitem_description_type":"Other"}]},"item_5_description_19":{"attribute_name":"内容記述（英）","attribute_value_mlt":[{"subitem_description":"Physical characteristics: Original contains color 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