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௱6$5峑岲峐岷峉ৗ峉峔൜൸ ഌஉ قবଅ৶ ك䠍䠊άᒙ䛾ά䛸ᆅ⾲䛾ኚ άᒙ䛜ά䛧ᆅ㟈䛜ᘬ䛝㉳䛣䛥䜜䜛䛸䚸ᆅୗ䛾ᒙ䛾䛪䜜䛻䜘䜚ᆅ⾲䛻䛥䜎䛦䜎䛺 ኚ䛜⌧䜜䜎䛩䚹䜒㢧ⴭ䛺䜒䛾䛿ᒙ䛾䛪䜜䛜ᆅ⾲䛻⌧䜜䛯 䛂ᆅ⾲ᆅ㟈ᒙ䛃䛷䛩䚹 ᆅ⾲䛜䛹䛾䜘䛖䛻ኚ䛧䛯䛾䛛䜢ᢕᥱ䛩䜛䛣䛸䛿䚸ᆅୗ䛷䛹䛾䜘䛖䛺⌧㇟䛜Ⓨ⏕䛧䛯 䛾䛛䜢▱䜛䛯䜑䛾㔜せ䛺ሗ䛷䛩䚹䛧䛛䛧䚸ᆅ⾲䛾ኚ䜢ṇ☜䛻ᢕᥱ䛩䜛䛯䜑䛻䛿䚸ᆅ ⾲䜢ᛕ䛻㋃ᰝ䛧䛯䜚䚸ゅ 㔞䜔Ỉ‽ 㔞䜢⾜䛖ᚲせ䛜䛒䜚䚸ᡭ㛫䛸㛫䛾䛛䛛䜛స ᴗ䛷䛧䛯䚹 ㏆ᖺ䚸ᅜᅵᆅ⌮㝔䛾㟁Ꮚᇶ‽Ⅼ䛜ഛ䛥䜜䚸ᅜ1300䞄ᡤ䛾㟁Ꮚᇶ‽Ⅼ䛷ᆅ㟈ᚋ┤ 䛱䛻ṇ☜䛺ᆅ⾲䛾ኚ䜢ィ 䛩䜛䛣䛸䛜䛷䛝䜛䜘䛖䛻䛺䜚䜎䛧䛯䛜䚸㟁Ꮚᇶ‽Ⅼ䛿⣙ 20km㛫㝸䛷タ⨨䛥䜜䛶䛔䜛䛣䛸䛛䜙䚸ᒙ䛾㏆ഐ䛾ኚ䜢ヲ⣽䛻ᢕᥱ䛩䜛䛣䛸䛿䛷䛝 䜎䛫䜣䠎䠊ᖸ΅SAR䛻䜘䜛ᆅ⾲ኚ䛾ほ  1990ᖺ௦ᚋ䛛䜙䚸ேᕤ⾨䛻ᦚ㍕䛥䜜䛯ᡂ㛤䝺䞊䝎䞊䠄SAR䠅䛸䛔䛖䝉䞁䝃䞊䜢 ⏝䛔䛶ᆅ⾲䜢㠃ⓗ䛻ほ 䛩䜛᪉ἲ䛜㛤Ⓨ䛥䜜䜎䛧䛯䚹SAR䛿䚸䝉䞁䝃䞊䛛䜙ᆅ⾲䛻䛡 䛶㟁☢Ἴ䠄䝬䜲䜽䝻Ἴ䠅䜢Ⓨᑕ䛧䚸ᆅ⾲䛷ᑕ䛧䛶ᡠ䛳䛶䛝䛯㟁☢Ἴ䛾ᙉᗘ䜔┦䜢ほ 䛩䜛ᢏ⾡䛷䛩䚹≉䛻䚸䛨㌶㐨䛾2ᅇ䛾ほ 䛾┦䜢ᖸ΅䛥䛫䜛䛣䛸䛻䜘䜚䚸2ᅇ䛾 ほ 䛾㛫䛾ேᕤ⾨䛸ᆅ⾲䛾㊥㞳䛾ኚ䜢㠃ⓗ䛻ᤊ䛘䜛䛣䛸䛜䛷䛝䜎䛩䚹䛣䛾䜘䛖䛺ほ ᪉ἲ䜢ᖸ΅SAR䛸䛔䛔䚸䛭䛾⤖ᯝ䛸䛧䛶ᚓ䜙䜜䛯⦤ᶍᵝ䛾⏬ീ䜢SARᖸ΅⏬ീ䛸䛔䛔 䜎䛩䚹⌧ᅾ䚸᪥ᮏ䛷䛿䚸2014ᖺ䛻Ᏹᐂ⯟✵◊✲㛤Ⓨᶵᵓ䠄JAXA䠅䛜ᡴ䛱䛢䛯ேᕤ⾨ 䛂䛰䛔䛱䠎䛃䛻ᦚ㍕䛥䜜䛯SAR䛜⏝䛔䜙䜜䛶䛚䜚䚸䛣䛾ሙ䛿⦤ᶍᵝ࿘ศ䠄㟷㟷䚸䜒䛧䛟䛿䛭䛾㏫䠅䛜⣙12cm䛾㊥㞳䛾ኚ䜢⾲䛧䛶䛔䜎䛩䚹 ᖸ΅SAR䛷䛿䚸ኳೃ䜔ኪ䛻㛵ಀ䛺䛟ほ 䛩䜛䛣䛸䛜䛷䛝䚸ᆅ䛻≉䛺⨨䜢タ⨨ 䛩䜛ᚲせ䛜䛺䛟䚸ᆅ⾲䛾ኚ䜢㠃ⓗ䛻ᢕᥱ䛩䜛䛣䛸䛜䛷䛝䜎䛩䚹 䠐䠊ᖸ΅SAR䛷ぢ䛘䛶䛝䛯᪂䛯䛺ᆅ㟈ീ 䠍䠅ᆅ⾲ኚ䛾ከᵝᛶ ᆅ㟈䛻ᆅ⾲䛻䛥䜎䛦䜎䛺ኚ䛜⏕䛨䜛䛣䛸䛿ᚑ᮶䛛䜙▱䜙䜜䛶䛔䜎䛧䛯䛜䚸䛺䜒䛾 䛿ᆅୗ䛾ᒙ䛾䛪䜜䛜ᆅ⾲䜎䛷฿㐩䛧䛯ᆅ⾲ᆅ㟈ᒙ䛸䚸ᆅୗ䛾䛪䜜䛻క䛔࿘㎶䛾 ᆅ⾲䛜䝂䝮䛾䜘䛖䛻ኚᙧ䛩䜛ᙎᛶኚᙧ䛷ㄝ䛷䛝䜛䛸⪃䛘䜙䜜䛶䛝䜎䛧䛯䚹䛧䛛䛧䚸ᖸ΅ SAR䛻䜘䜚ᆅ⾲䛾ኚᙧ䛜㠃ⓗ䛻ヲ⣽䛻ᢕᥱ䛷䛝䜛䜘䛖䛻䛺䛳䛯䛣䛸䛷䚸グ䛾䜘䛖䛺 ⓗ䛺ᒙ䛾ά䛜ᆅ㟈䛻ከ㉳䛣䛳䛶䛔䜛䛣䛸䛜䜙䛛䛻䛺䜚䛴䛴䛒䜚䜎䛩䚹䛣䛾䜘 䛖䛺䛂䛚䛝䛔ᆅ㟈ᒙ䛃䛿䚸䛭䜜⮬㌟䛜䛝䛺ᆅ㟈䜢Ⓨ⏕䛥䛫䜛䛣䛸䛿䛒䜚䜎䛫䜣 䛜䚸ᆅ⾲䛾䛪䜜䛻䜘䜛⿕ᐖ䜔䚸ᆅ㟈䛾ቑᖜ䛺䛹䜢䜒䛯䜙䛩⬟ᛶ䜒䛒䜚䚸䛭䛾ᛶ㉁䛻 䛴䛔䛶ᚋㄪᰝ◊✲䜢㐍䜑䜛ᚲせ䛜䛒䜚䜎䛩䚹 䠎䠅άᒙ䛾άᛶ䛾ホ౯ ⓗ䛺ኚ䛭䛾䜒䛾䛿䚸ᗘ䛻䛝䛺䛪䜜䜢⏕䛨䜛䛣䛸䛿䛒䜚䜎䛫䜣䛜䚸䛣䛾䜘䛖䛺 ኚ䛜⣼✚䛧䛶ᆅᙧ䜢ኚᙧ䛥䛫䛯䜚䚸ᆅᒙ䛻䛝䛺䛪䜜䛜⏕䛨䛥䛫䜛䛣䛸䛜䛒䜛䛣䛸䛜䚸 㜿⸽す㒊䛾ㄪᰝ䛺䛹䛷䜙䛛䛻䛺䜚䛴䛴䛒䜚䜎䛩䠄Ᏹ᰿䜋䛛2018䠅䚹άᒙ䛾ά䛻 ከᵝᛶ䛜䛒䜚䚸䛨άᒙ䛻⬟ⓗ䛺ά䛸䛔䜟䜀䛚䛝䛔䛾ⓗ䛺ά䛾䛹䛱 䜙䜒㉳䛣䜚䛖䜛䛸䛩䜜䜀䚸άᒙ䛜ᐃ䛾㛫㝸䛷ᐃ䛾つᶍ䛾ά䜢⧞䜚㏉䛩䛣䛸䜢๓ ᥦ䛸䛧䛶䚸䝖䝺䞁䝏䛛䜙ᚓ䛯άᒚṔ䛛䜙άᛶ䜢ホ౯䛩䜛䛣䛸䛿㐺ษ䛷䛺䛔⬟ᛶ䛜 䛒䜚䜎䛩䚹᪂䛯䛺ホ౯ᡭἲ䛻䛴䛔䛶ᚋㄪᰝ◊✲䜢㐍䜑䜛ᚲせ䛜䛒䜚䜎䛩䚹 2016ᖺ⇃ᮏᆅ㟈䛻క䛖ᆅ⾲ᆅ㟈ᒙ䚹༡㜿⸽ᮧ䚹ᅜᅵᆅ⌮㝔ᙳ 㟁Ꮚᇶ‽Ⅼ䛻䜘䜚ほ 䛥䜜䛯2016ᖺ⇃ᮏᆅ㟈䛻క䛖ᆅẆኚ䚹ᅜᅵᆅ⌮HP䜘䜚䚹 ⌧ᆅㄪᰝ䛷☜ㄆ䛥䜜䛯ᆅ⾲ኚ䠄Ᏹ᰿䜋䛛2017䠅䚹 2018ᖺ㜰ᗓ㒊䛾ᆅ㟈䛻క䛖ᆅ⾲ኚ䛾㐃⥆⥺䠄㉥⥺䠅䛸 ᚑ᮶䛾ᡭἲ䛻䜘䜛άᒙ䛾⨨䠄⸨ཎ䜋䛛2018䠅䚹 2018ᖺᾏ㐨⫹ᮾ㒊ᆅ㟈䛻క䛖ᆅ⾲ኚ䛾㐃⥆⥺䠄㟷⥺䠅䛸 ᚑ᮶䛾ᡭἲ䛻䜘䜛άᒙ䛾⨨䠄⸨ཎ䜋䛛2019䠅䚹 䠏䠊ᖸ΅SAR䛻䜘䛳䛶䜙䛛䛻䛺䛳䛯ᆅ⾲ኚ 䠍䠅2016ᖺ⇃ᮏᆅ㟈䠄M7.3ᆅ⾲ኚ䛾㒊ศ䛿㟈※ᒙ䛷䛒䜛ᕸ⏣ᕝ䞉᪥ዉᒙᖏ䛾ᒙ㐠䛷ㄝ䛷䛝䜎 䛩䛜䚸㟈※ᒙ䛛䜙㞳䜜䛯ሙᡤ䛷ᒙ㐠䜢♧䛩ᆅ⾲ኚ䛾⥺≧䛾㐃⥆䛜ከⓎ ぢ䛥䜜䜎䛧䛯䚹⌧ᆅㄪᰝ䜢⾜䛳䛯䛸䛣䜝䚸ከ䛟䛾㐃⥆⥺䛷ᆅ⾲䛾ኚ䛜☜ㄆ䛥䜜䜎 䛧䛯䚹䛣䜜䜙䛿ᆅ㟈䜢ᘬ䛝㉳䛣䛧䛯ᒙ䛾䛪䜜䛜ᆅ⾲䛻⌧䜜䛯ኚ䛸䛿⪃䛘䜙䜜䛪䚸ᆅ 㟈䛻క䛖ᛂຊ䛾ኚ䜔ᆅ㟈䛻䜘䜚ㄏⓎ䛥䜜䛯ⓗ䛺ᆅ㟈ᒙ䛸⪃䛘䜙䜜䜎䛩䚹 䠎䠅2018ᖺ㜰ᗓ㒊䛾ᆅ㟈䠄M6.1㟈※ᒙ䛾䛪䜜䛜ᆅ⾲䛻⌧䜜䛯ᆅ⾲ᆅ㟈ᒙ䛿☜ㄆ䛥䜜䛶䛔䜎䛫䜣䛜䚸᭷㤿-㧗ᵳ ᒙᖏ䛾┿ᒙ䛸⮴䛩䜛ሙᡤ䛷䜟䛪䛛䛻ᆅ⾲ኚ䛜ㄆ䜑䜙䜜䜎䛧䛯䚹┿ᒙ䛿 1596ᖺ㛗అぢᆅ㟈䠄M7.5䠅䛷䛾ኚ䛜☜ㄆ䛥䜜䛶䛚䜚䠄ᐮᕝ䜋䛛1996䠅䚸⧞䜚㏉䛧ᆅ 㟈䜢ᘬ䛝㉳䛣䛧䛶䛝䛯άⓗ䛺άᒙ䛻䛚䛔䛶䜒ᆅ㟈䜢క䜟䛺䛔ⓗ䛺ኚ䛜㉳䛣 䜚䛖䜛⬟ᛶ䜢♧䛧䛶䛔䜎䛩䚹 䠏䠅2018ᖺᾏ㐨⫹ᮾ㒊ᆅ㟈䠄M6.7㟈※䛜῝䛟䚸ᆅ⾲䜎䛷䛪䜜䛜฿㐩䛧䛯䛸䛿⪃䛘䜙䜜䜎䛫䜣䛜䚸㟈※䛾㏆䛟䛻⥺≧䛾ᆅ ⾲ኚ䛜⌧䜜䜎䛧䛯䚹άᒙ䛸䛿ㄆᐃ䛥䜜䛶䛔䛺䛔ఱ䜙䛛䛾ᆅୗ䛾ᵓ㐀䛜ⓗ䛻 䛔䛯⬟ᛶ䛜䛒䜚䜎䛩䚹 ㅰ㎡ 䛰䛔䛱2䛾ほ 䝕䞊䝍䛿䠈ᆅ㟈ண▱㐃⤡SARゎᯒ䝽䞊䜻䞁䜾䜾䝹䞊䝥䜢㏻䛧䛶JAXA 䛛䜙ᥦ౪䛥䜜䛯䜒䛾䛷䛩䚹ゎᯒ䠖ᅜᅵᆅ⌮㝔 ཎ䝕䞊䝍ᡤ᭷䠖JAXA 䠄ᕥ䠅ᆅ⾲ኚ䛾㐃⥆䜢ᢳฟ䠄㯮ᐇ⥺䠅䚹 䠄䠅ᖸ΅SAR䛛䜙ᢕᥱ䛧䛯ୗኚ䛸ᚑ᮶䛾ᡭἲ䛻䜘䜛άᒙ䛾⨨䚹 A ▼⊁పᆅᮾ⦕ᒙᖏ (ụ⏣2002) ᆅ⾲ᆅ㟈Ἴ᥈ᰝồᆅୗࡎࡢ(2014) 㟈ኸ B C b1 a b2 b3 c ᮐᖠ ᨭ➖† Ɫᑠ∾ 0 1000 2000 3000 4000 0 50 100 0 50 100 150 0 1000 2000 3000 4000 5000 0 50 100 0 50 100 150 0 500 1000 1500 -50 0 50 0 10 20 30 40 50 0 500 1000 1500 -50 0 50 0 50 100 150 0 1000 2000 3000 4000 5000 -50 0 50 100 0 50 100 150 a b2 b1 c すЋ Ỉᖹ㊥㞳(m) Ѝᮾ (mm, ࢣࢫ) ‽す(mm, ࢣࢫ) ᶆ㧗 (m, ࢣࢫ) b3 ɥӼிӼிӼிӼிӼிӼᙱӼ ᙱӼ ᙱӼ ᙱӼ ᙱӼ 㯮Ⅼ⥺ ᅜᅵᆅ⌮㝔 άᒙᅗ㸦ᒸ⏣2008ᦤὠᐩ⏣㥐 Ⲉᮌ㥐 ⟪㠃㥐 㜿Ṋᒣ ᙬ㒔す㥐 ༓㔛୰ኸ㥐 2016414Mw 6.2 2016416Mw 7.0 N 414᪥䛛䜙23᪥䜎䛷䛾㟈ኸ⨨ 0< ῝䛥 < 5 km 5< ῝䛥 < 10 km ᕸ⏣ᕝᒙᖏἢ䛔䛾㠀ᖸ΅ᆅᖏ ⌧ᆅㄪᰝ䛻䜘䜛ᆅ⾲ᆅ㟈ᒙ 䠄ᆅ㉁ㄪᰝ⥲䝉䞁䝍䞊䚸2016ᖸ΅SAR䛻䜘䛳䛶ฟ䛥䜜䛯ᆅ⾲ᒙ ᖸ΅SAR䛷ᤊ䛘䛯2016ᖺ⇃ᮏᆅ㟈䛻క䛖ᆅ⾲ኚ䚹 㯮ᐇ⥺䛿ኚ䛾㐃⥆⥺䠄⸨ཎ䜋䛛2016䠅䚹 2016ᖺ⇃ᮏᆅ㟈䛻䛚䛡䜛ᆅ⾲ኚ䛾㐃⥆⥺䛸㟈※ศᕸ䠄⸨ཎ䜋䛛2016䠅䚹 ༡ⴠ䛱ᆅ⾲ᒙ ⴠ䛱ᆅ⾲ᒙ άᒙ䠄㕥ᮌ2017Analysis by GSI from ALOS-2 raw data of JAXA N ᪥ᮏ ᅗ䛾⠊ᅖ -12 -6 0 6 12 -ᆅ⾲㛫䛾㊥㞳䛾ኚ(cm) ⾨䛻 ㏆䛵䛟 ⾨䛛䜙 㐲䛦䛛䜛 ᆅ⾲ᆅ㟈ᒙ ᖸ΅SAR 2016ᖺ⇃ᮏᆅ㟈 2018ᖺ㜰ᗓ㒊䛾ᆅ㟈 2018ᖺᾏ㐨⫹ᮾ㒊ᆅ㟈 ᆅ⾲ኚ䛾㐃⥆⥺䠄㟷⥺䠅䜢ᶓษ䜛 ᆅ⾲ኚ䛸ᆅᙧ䛾㠃ᅗ 䛰䛔䛱2ALOS-2) JAXA䝩䞊䝮䝨䞊䝆䜘䜚

x - janet-dr.com · FÛG f jFåG FïG FþF÷FéF¹0 ÒH \ u #.7T N 6GUG GM d wH JAXA H eH /² ·Fþ Y4 )FG" ³ H ;î )zH F¹ H H ¸ îSARFÛG qFçFï V W )Fø ¶Fþ m 2FûG G q Fþ

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Page 1: x - janet-dr.com · FÛG f jFåG FïG FþF÷FéF¹0 ÒH \ u #.7T N 6GUG GM d wH JAXA H eH /² ·Fþ Y4 )FG" ³ H ;î )zH F¹ H H ¸ îSARFÛG qFçFï V W )Fø ¶Fþ m 2FûG G q Fþ

1300

20km

SAR1990 SAR

SAR

2 2

SAR SAR2014 JAXA

SAR → →→ → 12cm

SAR

SAR

SAR

2018

2016

2016 HP2017

20182018 2018

2019

SAR2016 M7.3

2018 M6.1-

1596 M7.5 1996

2018 M6.7

2 SAR JAXAJAXA

SAR

A

Mukawatown

( 2002)

( 2014)

B

C

b1

a

b2

b3

c

0 1000 2000 3000 4000

0

50

100

0

50

100

150

0 1000 2000 3000 4000 5000

0

50

100

0

50

100

1500 500 1000 1500

-50

0

50

0

10

20

30

40

50

0 500 1000 1500

-50

0

50

0

50

100

150

0 1000 2000 3000 4000 5000-50

0

50

100

0

50

100

150

a

b2

b1

c

(m)

(mm, )

(mm, )

(m, )

b3↑

→→

2008

2016 4 14Mw 6.2

2016 4 16Mw 7.0

N

4 14 23

0 < < 5 km5 < < 10 km

2016

SAR

SAR 20162016

2016 2016

2017

Analysis by GSI from ALOS-2 raw data of JAXA

N

-12 -6 0 6 12- (cm)

SAR

2016

2018 2018

2 ALOS-2) JAXA