{"_buckets": {"deposit": "aab92a54-f93f-48b0-8474-81155d918730"}, "_deposit": {"id": "11178", "owners": [], "pid": {"revision_id": 0, "type": "depid", "value": "11178"}, "status": "published"}, "_oai": {"id": "oai:nagoya.repo.nii.ac.jp:00011178", "sets": ["1093"]}, "author_link": ["33813", "33814", "33815", "33816"], "item_1618209983323": {"attribute_name": "助成情報", "attribute_value_mlt": [{"subitem_award_numbers": {"subitem_award_number": "08458144", "subitem_award_uri": "https://kaken.nii.ac.jp/ja/grant/KAKENHI-PROJECT-08458144"}, "subitem_award_titles": [{"subitem_award_title": "大気中メタンの発生源評価-大気拡散モデル解析・大気放射能測定・同位体比測定によって-", "subitem_award_title_language": "ja"}], "subitem_funder_identifiers": {"subitem_funder_identifier": "https://doi.org/10.13039/501100001691", "subitem_funder_identifier_type": "Crossref Funder"}, "subitem_funder_names": [{"subitem_funder_name": "日本学術振興会", "subitem_funder_name_language": "ja"}]}]}, "item_19_biblio_info_6": {"attribute_name": "書誌情報", "attribute_value_mlt": [{"bibliographicIssueDates": {"bibliographicIssueDate": "1998-03", "bibliographicIssueDateType": "Issued"}}]}, "item_19_description_4": {"attribute_name": "抄録", "attribute_value_mlt": [{"subitem_description": "大気中のメタン濃度の日変動測定値と拡散方程式の数値解析による日変動計算値の比較によって、メタンの発生強度(フラックス)を評価する手法を検討した。ラドンについての1次元非定常拡散方程式の数値解は、ラドン濃度変動をよく説明し、拡散方程式の数値解の信頼性を実証した。この数値解法をメタンに適用することにより、そのフラックスを決定することができる。大気中メタン濃度とラドン濃度の日変動パタ-ンの類似性に着目し、大気中ラドンの動態に関する知見から、発生源を含む地域からのメタンフラックスを評価する方法を検討し、都市域のうち近郊域に着目して、メタンの発生源について地域内の発生源のばらつきを平均化したフラックスを得ることができた。名古屋市の南西部では7月および8月まで大きな増大がみられ、地域的メタンフラックスは0.068gCH_4・m^\u003c-2\u003e・d^\u003c-1\u003e に達した。炭素同位体比の測定結果を解析し、弥富町の試料採集地周辺地域で大気中に放出されたメタンのほとんどは非化石起源メタンであり、土地利用を考慮すると水田に由来するメタンであると考えられた。メタンフラックスが不均一な広領域における面積分フラックスの評価法を大気中ラドンとメタンの日変動の類似性を用いて、愛知県を例として述べた。その結果愛知県で年間15.12GgCH_4、名古屋市で年間1.52GgCH_4の発生量を得た。更に廃棄物埋立地からのメタンフラックスの評価法についても検討を行った。", "subitem_description_language": "ja", "subitem_description_type": "Abstract"}]}, "item_19_description_5": {"attribute_name": 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[{"value": "5.3 MB"}], "format": "application/pdf", "future_date_message": "", "is_thumbnail": false, "licensetype": "license_note", "mimetype": "application/pdf", "size": 5300000.0, "url": {"label": "08458144.pdf", "objectType": "fulltext", "url": "https://nagoya.repo.nii.ac.jp/record/11178/files/08458144.pdf"}, "version_id": "42b541c6-8f79-46b8-bfcd-8ecfc802aa56"}]}, "item_keyword": {"attribute_name": "キーワード", "attribute_value_mlt": [{"subitem_subject": "ラドン", "subitem_subject_scheme": "Other"}, {"subitem_subject": "大気拡散", "subitem_subject_scheme": "Other"}, {"subitem_subject": "日変動", "subitem_subject_scheme": "Other"}, {"subitem_subject": "水田", "subitem_subject_scheme": "Other"}, {"subitem_subject": "非化石起源メタン", "subitem_subject_scheme": "Other"}, {"subitem_subject": "メタンフラックス", "subitem_subject_scheme": "Other"}, {"subitem_subject": "拡散方程式", "subitem_subject_scheme": "Other"}, {"subitem_subject": "メタン同位体比", "subitem_subject_scheme": "Other"}, {"subitem_subject": "メタン発生率", "subitem_subject_scheme": "Other"}, {"subitem_subject": "diffusion equation", "subitem_subject_scheme": "Other"}, {"subitem_subject": "diurnal variation", "subitem_subject_scheme": "Other"}, {"subitem_subject": "paddy field", "subitem_subject_scheme": "Other"}, {"subitem_subject": "乱流拡散係数", "subitem_subject_scheme": "Other"}, {"subitem_subject": "炭素同位体比", "subitem_subject_scheme": "Other"}, {"subitem_subject": "methane flux", "subitem_subject_scheme": "Other"}, {"subitem_subject": "non-fossil fuel", "subitem_subject_scheme": "Other"}, {"subitem_subject": "atmospheric diffusion", "subitem_subject_scheme": "Other"}, {"subitem_subject": "radon", "subitem_subject_scheme": "Other"}, {"subitem_subject": "isotope ratio", "subitem_subject_scheme": "Other"}]}, "item_language": {"attribute_name": "言語", "attribute_value_mlt": [{"subitem_language": "jpn"}]}, "item_resource_type": {"attribute_name": "資源タイプ", "attribute_value_mlt": [{"resourcetype": "research report", "resourceuri": 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