書誌事項
- タイトル別名
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- Estimation of Coastal Lagoon Surface Wind Speed Distribution Using Satellite SAR Data
- エイセイ トウサイ ゴウセイ カイコウ レーダ ニ ヨル キスイイキ ノ コジョウ フウソク ブンプ スイテイ
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An extensive study result is presented on the feasibility of SAR estimation of surface wind-speed distribution for coastal lagoon, specifically Lakes Shinji and Nakaumi, Japan. Four satellite-borne SARs, JERS-1, ERS-1, ERS-2 and Radarsat, are used to study the relation between SAR-derived normalized radar cross-section (NRCS) and in-situ surface winds, in order to study the dependence of SAR frequency and incidence angle on the sensitivity of NRCS change to wind speed. It is found that SAR NRCSs have good correlations with the in-situ wind data when C-band and relatively high incidence angle is used and when wind speed is moderate to high, indicating that such SARs have a potential to estimate high-spatial-resolution wind field. On the other hand, peculiar signatures are sometimes found especially when wind speed is low, indicating that the SAR is sensitive to very fine roughness conditions that may be caused by slicks, water flows and/or ship wakes. A simple spatial filtering is also tested to detect such signatures to extract the areas where SAR-estimated wind speed is reliable.
収録刊行物
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- 日本リモートセンシング学会誌
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日本リモートセンシング学会誌 28 (5), 411-426, 2008
一般社団法人 日本リモートセンシング学会
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詳細情報 詳細情報について
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- CRID
- 1390282679642308352
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- NII論文ID
- 10024485257
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- NII書誌ID
- AN10035665
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- ISSN
- 18831184
- 02897911
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- NDL書誌ID
- 9743206
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可
