ᾏἣண 䛻䛚䛡䜛⾨ᫍほ 䝕䞊䝍䛾⏝ ᾏὶ䛾ண ᾏὒ◊✲㛤Ⓨᶵᵓ䜰䝥䝸䜿䞊䝅䝵䞁䝷䝪 ᐑ⃝Ὀṇ http://www.jamstec.go.jp/jcope/htdocs/kowj/kowj.html ணሗゎㄝ䝨䞊䝆<㯮₻ぶ ₻䜴䜷䝑䝏>䜢䛤ぴ䛟䛰䛥䛔 䠘䝕䞊䝍ྠ䠚ᢏ⾡䛻䜘䛳䛶 ほ 䛸䝰䝕䝹䜢⤌䜏ྜ䜟䛫䚸 ண 䛾ฟⓎⅬ䛸䛺䜛ึᮇ್ 䜢᥎ᐃ䛩䜛 ᾏἣண ⏝䛾ᗈ䛜䜚 䠐䠕䠕䝖䞁ᆺ㈌≀⯪ Å⌧≧䠖 10km⛬ᗘ᱁Ꮚ 㛫㝸䛾ண ᾏἣண 䛻⏝䛔䛶䛔䜛ほ ⾨ᫍ䛯䛱 ᾏ㠃㧗ᗘほ ⾨ᫍ 4ᇶ J JasonͲ2(⡿䞉) 2 (⡿ ) C CryosatͲ2(Ḣ)Saral/Altika 2 (Ḣ) S l/Al ik (༳䞉) (༳ ) ⯪ᶫ䛷䛾⏝ H iY HaiYangͲ2A䠄୰䞉) 2A 䠄୰ ) <Altimeter> ᾏ㠃Ỉ ほ ⾨ᫍ 4ᇶ ᇶ ᾏὒ◊✲୍⯡䛻ຍ䛘䚸 ᾏὒ⎔ቃホ౯䚸⯪⯧㐠⾜䚸Ỉ⏘ᴗ䚸ᾏᗏ᥀๐䚸ᾏὒ⏕ྍ⬟䜶䝛䝹䜼䞊㛤Ⓨ䚸㜵⾨䛺䛹䜈 䛾⏝䛜ᗈ䛜䜛 䠖 䝬䜲䜽䝻Ἴ 䠖 ㉥እ⥺ NOAAͲ18(⡿)NOAAͲ19(⡿) Aqua(⡿) <AVHRR><MODIS> Terra(⡿) ᾏ㠃㧗ᗘ䜢ほ 䛩䜛ேᕤ⾨ᫍ ᾏ㠃㧗ᗘ⾨ᫍほ 䛸ᾏἣண ⌧ሙỈ ほ 䝕䞊䝍 ⌧ሙỈ ほ 䝕 䝍 䝁䝸䜸䝸ຊ ᾏ㠃䛾㧗ప䠄ฝพ䠅䜢ほ 䛩䜛䛣䛸䛷ᾏ䛾୰䛾 Ỉሢศᕸ䛸ᾏὶศᕸ䜢᥎ᐃ䛷䛝䜛 ⾨ᫍᾏ㠃㧗ᗘ ᅽຊ໙㓄 ᾏὶ ㍍䛔Ỉ ୰つᶍኚື䠖ᾏὶ䛾⺬⾜䜔 䛾ᢕᥱ䛻ᚲせ ᾏ㠃Ỉ ⾨ᫍほ 䛸ᾏἣண ⌧ሙỈ ほ 䝕䞊䝍 ⌧ሙỈ ほ 䝕 䝍 ᾏ㠃㧗ᗘほ 䛾ㄢ㢟䠖୰つᶍኚື䛾䛺ᢕᥱ ⌧≧䛿┤ᚄ100km䛾 䜎䛷 ⾨ᫍᾏ㠃Ỉ ᾏ㠃㧗ᗘ䝕䞊䝍䛜⾲䛩 ኚື䛾✵㛫䝇䜿䞊䝹(ᶓ ㍈)䛸 䛭䛾䝇䜿䞊䝹䛾 ㍈)䛸䚸䛭䛾䝇䜿 䝹䛾 ኚື䛾䛝䛥䛾㛵ಀÆ 2015/03/02䛾 ᾏ㠃㧗ᗘኚືほ 100km 㞧㡢 㡿ᇦ 200km (FuandFerrari2008) 㻝㻜㻜㼗㼙Æ㻝㻜㼗㼙䠖 㔠ẚ⨶㻔㻫ᖺ㻕䛸㻿㼃㻻㼀㻔㻞㻜㻞㻜ᖺ㻕 Coastal and Ocean measurement Mission with Precise and Innovative Radar Altimeter (COMPIRA) 5km, 10᪥ COMPIRA 10᪥㛫 Surface Water and Ocean Topography (SWOT) (FuandUbelman 2014) SWOT⾨ᫍ(NASA 2020) SWOT⾨ᫍ(NASA2020) ௬ᾏ㠃㧗ᗘ 1km, 22᪥ SWOT 10᪥㛫 䛂㠃䛃䜢ほ 䛩䜛ேᕤ⾨ᫍ䜈䛾ᮇᚅ ௬ほ 䠄ᚑ᮶䠅 ᚑ᮶ほ 䛛䜙䛾ඖ 䛂㠃䛃ほ 䛻䜘䜛ඖ COMPIRA+ SWOT ௬ᾏὶᙉᗘ ᾏ㠃Ỉ ⾨ᫍほ 䛾ㄢ㢟䠖㞼䛻䜘䜛ྍど ᚑ᮶ほ 䛛䜙䛾ඖ 䛂㠃䛃ほ 䛻䜘䜛ඖ 䜹䝹䝬䞁䝣䜱䝹䝍䞊䛻䜘䜛㧗ゎീᗘᾏ㠃Ỉ 䛾ඖ MODIS⾨ᫍᾏ㠃Ỉ MODIS䛺䛧䛷ඖ MODIS䜢ຍ䛘䛶ඖ ㉥እ⥺䝕䞊䝍䛿䚸ゎീᗘ 䛿1km䛸⣽䛛䛔䛜䚸㞼䛻 䜘䛳䛶ྍど䛸䛺䜛 䠄㞼䜢㏱㐣䛩䜛䝬䜲䜽䝻Ἴ 䝕 䝍䜒䛒䜛䛜ゎീᗘ䛜 䝕䞊䝍䜒䛒䜛䛜ゎീᗘ䛜 ⢒䛔䠅 JAXAͲJAMSTECඹྠ◊✲ 䜂䜎䜟䜚8ྕ䠄2014/10/7ᡴୖ)䛾㧗㢖ᗘ(2.5ศ)䞉㧗 䜂䜎䜟䜚 ྕ䠄 / / ᡴୖ)䛾㧗㢖ᗘ( ศ) 㧗 ゎീᗘ(1km)ほ 䝕䞊䝍䜢ᑟධ䛩䜜䜀䚸䛥䜙䛻⢭ ⦓䛺ඖ䛸ᾏὶண 䜈䛾⏝䛜ྍ⬟䛻 (Miyazawaetal.2013) ⾨ᫍᾏ㠃Ỉ ほ 䛸䝰䝕䝹䛜ᤊ䛘䛯,ኚື䛩䜛㯮₻๓⥺ 6㛫㛫㝸AVHRR⏬ീ ᪂䛯䛺⾨ᫍほ 䝕䞊䝍䛾ά⏝䛻ྥ䛡䛶:⾨ᫍSAR (Ni hi (Nishimuraetal.1998) l 1998) Å᪥ᮏᾏ䛾 ⏬ീ䠖 3Ͳ5km 䝃䜲䝈䛾↓ᩘ 䛾 䜹䝸䝤ᾏ䝞䝝 䝬ᓥ࿘㎶䛾 ⏬ീ䠖 ┤ᚄ 15km䛾 (IvanovandGinzburg 2002) 䜎䛸䜑䛸ᒎᮃ 1. ᾏ㠃 ᾏ㠃䛾พฝ䜢ほ 䛩䜛<ᾏ㠃㧗ᗘ⾨ᫍほ >䛻䜘䛳䛶䚸ᾏὶ䛂ὶ㊰䛃 พฝ䜢ほ 䛩䜛 ᾏ㠃㧗ᗘ⾨ᫍほ 䛻䜘 ᾏὶ䛂ὶ㊰ ண 䛜☜❧䛧䛯 2. 䛂⥺ⓗ䛃ほ 䛾㛫㝽䜢ᇙ䜑䜛䛂 䛂㠃ⓗ䛃ほ 䛻䜘䛳䛶䛂䛂୰つᶍ 䛃䛾ᤕ ᤊ䛜ᡂ䛩䜛䛰䜝䛖 3. <㧗ゎീᗘ⾨ᫍᾏ㠃Ỉ ほ >䛾ά⏝䛻䜘䛳䛶䚸ᾏὶ䛂ὶ㊰䛃䛾䜏 㧗ゎീᗘ⾨ᫍᾏ㠃Ỉ ほ 䛾ά⏝䛻䜘 䛶 ᾏὶ䛂ὶ㊰ 䛾䜏 䛺䜙䛪䛂䛂๓⥺Ἴື䛃䡚䛂ᛴ₻䛃䛾ண 䛜ᐇ⌧䛩䜛䛰䜝䛖䚹 4. ᚑ᮶䛿⏬ീ䛾䜏䛾⏝䛷䛒䛳䛯<⾨ᫍSARほ >䛾ά⏝䜒㐍䜑 䛶䛔䛝䛯䛔 ᩘk ௨ୗ䝇䜿 䝹䛾 άື䜔ෆ㒊Ἴ䛾ᢕᥱ 䟿 䛶䛔䛝䛯䛔䚹ᩘkm௨ୗ䝇䜿䞊䝹䛾 άື䜔ෆ㒊Ἴ䛾ᢕᥱ䜈䟿 ୕Ꮿᓥ࿘㎶䛾⏬ീ ⯪⯧䛸䛭䛾 ⯟㊧ ᩘ್䝰䝕䝹 㯮₻䛸ᓥᆅᙧ䛾┦స⏝䛻䜘䜛 ෆ㒊Ἴ䛾ບ㉳ (Kodaira etal.2014)
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