[論説] 歴史津波からみた若狭湾岸の津波の挙動
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(2) 䈲ਔᵤᵄ䈫䉅 3.5 m 䈮㆐䈚䋬⥰㢬᷼ౝᄖ䉇䈠䈱ઁ䈪ᶐ ᳓ⵍኂ䈏䈩䈇䉎䋮 §3䋮 ᵄ㜞䈱Ⴧᐲ ⧯⁜ḧጯ䈮䈍䈇䈩䋬1940 ᐕⓍਤᴒ䊶1964 ᐕᣂẟ䊶 1983 ᐕ ᣣ ᧄ ᶏ ਛ ㇱ 䈱 ฦ ᵤ ᵄ 䈮 䉋 䉎 ᵻ ᳓ 䊶 ዮ ᛬ 䋨Shoaling䊶Refraction䋩ଥᢙ䈲 1.1 䈫ᓧ䉌䉏䋬ዮ᛬ലᨐ䈮 䉋䉎ᵄ㜞䈱Ⴧ↪䈲ዊ䈘䈇䋮࿑ 4 ࿑䈮䈲䋬ห䈛ᣇ ᴺ䈮䉋䉎 1993 ᐕർᶏධᴒᵤᵄ䈱⸃ᨆ䉕␜䈜䋮 વ࿑䈲ᵄḮ䈎䉌࿑䈚䋬⊒㔡ᤨ䈎䉌 85 ಽએᓟ䈱ᵄ 㕙䉕 5 ಽ㑆㓒䈪␜䈜䋮䈭䈍ᴪጯઃㄭ䈱ᵄ㕙䈲䋬ᬌầ⸥ ㍳䈮䉋䉎ታ᷹વᤨ㑆䋨ᤨ䋬ಽ䋩䈫䈾䈿⺞⊛䈪䈅䉎䋮 ᵄ✢䉕ឬ䈐ᆎ䉄䈢ᚲ䋨ᵄ㕙䈲 20 km 㑆㓒䈮ಽഀ䋩䈱᳓ 䈏᳓ᷓ 100 m 䈱ᴪጯ䈻વ䉒䉎䈫䈐䋬ᵄ㜞䈲ㄭૃ⊛䈮 䉫䊥䊷䊮䈱ᴺೣ䋨ᴪጯ䈫䈱᳓ᷓᲧ䈲 1/4 ਸ਼䋬ᵄ✢䈱Ყ 䈲 1/2 ਸ਼䈪ᵄ㜞䈏ᄌൻ䋩䈪ᄌൻ䈜䉎䈫ข䉍ᛒ䈇䋬S.R ଥ ᢙ䉕⸘▚䈚䈢䋮⸃ᨆ䈱⚿ᨐ䈲࿑ 4 ਅ࿑䈱䉋䈉䈮䈭䉍䋬 S.R ଥᢙ䋨ᩇ⁁䉫䊤䊐䋩䈲∥〔㜞䋨㤥ਣ䋺ᧄᎺᴪጯ䋬⊕ ਣ䋺㓝ጘ⻉ፉ䋩䈱ಽᏓ䈫䈾䈿⺞䈚䋬ፉᩮඨፉ䊶㓝ጘ䈪 䈱ଥᢙ䈲 4.5 䈫⓭䈜䉎䋮䈚䈎䈚䋬⧯⁜ḧጯ䈪䈲 1.0 䈫 ᳞䉄䉌䉏䋬ዮ᛬ലᨐ䈲ዊ䈘䈇䋮 䈧䈑䈮䋬ᵤᵄ䈱ᦼ䈫ᵄ㜞䈫䈱㑐ଥ䉕䈩䉂䉋䈉䋮࿑ 5 䈮䈲䈖䉏䉁䈪䈫䉍ᛒ䈦䈢 3 ᵤᵄ䈮䈧䈇䈩䋬ᢕ⾐䊶⥰㢬 ᧲᷼䊶⥰㢬᷼䊶ችᵤ䈮䈍䈔䉎ᬌầ⸥㍳䈱ᦨᄢᵄ䈱 ᦼ䈫ోᝄ୯䈱㑐ଥ䉕␜䈜䋮1964 ᐕᵤᵄ䈪䈲䋬ችᵤ䈫 ᢕ⾐䈪ᦼ 20 ಽ⒟ᐲ䈱ᵄ䈏ሽ䈜䉎䋮ᢕ⾐䈱ᬌầ⸥ ㍳ᵄᒻ䋨࿑ 1䋩䈮䈲ᝄ⽎䈏䉌䉏䉎䋮䉁䈢䋬ችᵤ䈱 ᷹ⷰᵄᒻ䈪䉶䉟䉲䊠ᦼ䈲 18-22 ಽ䈫 42-60 ಽ䈪䈅䉍 䋨Nakano and Unoki䋬1962䋩䋬20 ಽ䈅䈢䉍䈏 1964 ᐕᵤᵄ 䈱ථᦼ䈮ㄭ䈇䋮৻ᣇ䋬1983 ᐕ䊶1993 ᐕᵤᵄ䈪䈲 ᦼ⚂ 10 ಽ䈱ᵄ䈏ථ䈚䈩䈇䉎䋮䈭䈍䋬ጊ㒶ᴪጯ䈪 䈲ᵤᵄೋേ䈎䉌ᦨᄢᵄ䉁䈪䈱ᤨ㑆㑆㓒䈏 3-4 ᤨ㑆䈱 ᷹ⷰὐ䈏ᄙ䈇䋨⠀㠽䋬1994a䋩䋮ᢕ⾐䈫ችᵤ䈪䉅 1983 ᐕ ᵤᵄ䈫 1993 ᐕᵤᵄ䈲 2-4 ᤨ㑆䈮䈭䉍䋬1964 ᐕᵤᵄ䈪 䈲 5.5 ᤨ㑆䈪䈅䈦䈢䋮 §4䋮 ᱧผᵤᵄ 4.1 ᣣᧄᶏ᧲✼䈱ᵤᵄ 1741 ᐕ 8 29 ᣣ䋨ኡరᐕ৾චᣣ䋩ർᶏᷰ ፉᄢፉᵤᵄ䈲䋬ᷰፉඨፉጯၞ䈪 10-15 m એ䈱ᵄ 㜞䈮㆐䈚䋨䊶᧻ᧄ䋬1998; ㇺม䊶ઁ䋬2002䋩䋬2000 ੱ 䈮䈱䈿䉎ᱫ⠪䉕䈚䈢䋮䈖䈱䈫䈐䋬ᷰፉᄢፉ䈪ἫጊྃἫ 䈏䈅䉍䋬ጊ䈏ᄢ፣უ䈚䈢䋮ᵤᵄ䈲ᷰ䊶ർ㒽䊶ጊ㒶䈪 ⸥㍳䈘䉏ᄢⷙᮨ䈭䈖䈫䈎䉌䋬╩⠪䋨⠀㠽䋬1984䋩䈲⊒↢ ⷐ࿃䉕㔡ᢿጀ䈮䉋䉎ᶏᐩᄌേ䈫䉂䈭䈚䈢䋮ᵤᵄ䈱䊙. 䉫䊆䉼䊠䊷䊄䈲ᵄ㜞䈫㔡ᄩ〒㔌䈱㑐ଥ࿑䈎䉌m 䋽 3.5 䈫ផቯ䈘䉏䋨⠀㠽䋬1984䋩䋬ᣣᧄᶏ䈮䈍䈔䉎ᦨᄢ⚖䈱 ⷙᮨ䈪䈅䈦䈢䋮⧯⁜ḧጯ䈪䉅 4 ▎ᚲ䈪⸥㍳䈘䉏䈩䈇䉎 䋨࿑ 6䋩䋮 ᣂᣣᧄ㔡ผᢱ䋨᧲ᄢ㔡⎇ⓥᚲ✬䋬1989䋩䈮䉋 䉏䈳䋬⥰㢬ḧᄖ䈪䇸ᄢ䋨ᄢਤ↢䋩ઃㄭ྾䍗ᵤᵄ ᛂ䈤䇹䈫䈅䉎䋮ㄭᐕ⊒ជ䈘䉏䈢ผᢱ䋨ቝ⟤䋬1998䋬 2002䋩䈮䈲䇸ዊᯅ䋬㊁ේ㜞ᶉ∩ኅ80 イౝ28 イ䍨ẩ ኅ䋨ਛ⇛䋩㩷 ଧ䍤᧪↳䈚ᶉᏅ⠰ᄢ㘑䉅็ਇ↳䍤᧪↳ ᵄ䍤⠰䇹䈫䈅䉎䋮⋵ዊᵿ䈪䈲䇸⚂ 20 イầ䉍䋬 ੱ䇱ਇክ䈭䈜䇹䋮䉁䈢䋬⋵ᴡ㊁㊄⋧ኹ䈱ㆊᏭ 䈮䇸ᒰಣ䍣䍢䍼ầ䍧ᜰᒁਅ䍛䍷৾ዤ䋬ਅᶆ䍨ᄀਂᑽዤ 䍬䍢䍼ᜰᒁ↳ᤤ䍧䍠ᤨ䍤ಣ䍷ᧂᦦ䍢䇹䈫䈅䉎䋮એ䈱⸥ ㍳䈎䉌⋚㜞䉕䈸䉁䈋䈢㆚䈮䉋䉍䋬⥰㢬ḧᄖ䈱ዊ ᯅ䈫㊁ේ䈪ᵤᵄ㜞䋨ᐔဋᶏ㕙䋩䈲 3-4 m 䈮㆐䈚䋬ዊᵿ 1 m䋬ᴡ㊁䈪 2 m 䈫ផቯ䈚䈢䋮䈭䈍೨䈮ㅀ䈼䈢䉋䈉䈮䋬 ዊᯅ䈪䈲 1983 ᐕ䈫 1993 ᐕ䈱ᵤᵄ㜞䈲 3.5 m 䈫ታ᷹䈘 䉏䈩䈍䉍䋨ㇺม䊶ઁ䋬1994䋩䋬Ფ࿁ᵤᵄ㜞䈏ዪ⊛䈮㜞 䈇䋮 ৻ᣇ䋬1833 ᐕ12 7 ᣣ䋨ᄤ྾ᐕචੑᣣ䋩ጊᒻ ⋵ᴒ㔡䋨䌍7.5䋩䈮䈉ᵤᵄ䈲䋬ጊᒻ⋵ᴪጯ䈪 5-8 m 䈱ᵄ㜞䈮㆐䈚䋬ᷰ䊶㓝ጘ䈮䉅ᶐ᳓ⵍኂ䉕䉅䈢䉌䈚䈩䋬 ⢻⊓ベፉ䈪 47 ੱ䈱ᱫ⠪䉕䈚䈢䋮ᵤᵄ䊙䉫䊆䉼䊠䊷䊄 䈲 m = 2.5 䈫ផቯ䈘䉏䈩䈍䉍䋨⠀㠽䋬1990䋩䋬1964 ᐕᣂẟ ᵤᵄ䉋䉍࿁䈦䈢䋮ᣂᣣᧄ㔡ผᢱ䋨᧲ᄢ㔡⎇ⓥ ᚲ✬䋬1989䋩䈮䉋䉏䈳䋬⋵ዊᵿ䈪䈲䇸ᥙਊೞ 㔡䋬䍗ㄖೞ䉋䉍ầㄟ䍤䍡ᎹㄥᏅㄟ䇹䈫䈅䉎䋮↸䈮㆚䈚 䈭䈎䈦䈢䉋䈉䈪䈅䉍䋬ᵤᵄ㜞䈲 1 m ⒟ᐲ䈫䉂䈭䈘䉏䉎䋮 4.2 ㄭ㔡ᵤᵄ ⧯⁜ḧౝᄖ䈮䈲ᢙ᧦䈱ᵴᢿጀ⟲䈏䈅䉎䈏䋬ⵍኂ 㔡䉇ᵤᵄ䈱⊒↢ઙᢙ䈲Ყセ⊛ዋ䈭䈇䋮࿑7 䈮䈲䋬ਥ䈭 ᵴᢿጀ䈫ㄝ䈱㔡㔡ᄩ䋨㔡⺞ᩏ⎇ⓥផㅴᧄㇱ䋬 1997䋩䈍䉋䈶㔡ᵤᵄ䈱ᵄ㜞ಽᏓ䉕␜䈜䋮 1662 ᐕ 6 16 ᣣ䋨ኡᢥੑᐕ৻ᣣ䋩ㄭᳯ䊶⧯⁜ 㔡䈲䋬ṑ⾐⋵䊶੩ㇺᐭ䈭䈬ᐢ▸࿐䈮ᄢἴኂ䉕䉅䈢䉌䈚䋬 ᱫ⠪ 880 ੱ䈮䈱䈿䈦䈢䋮ᦨㄭ䋬ਃᣇḓㄝ䈱Ზ ᄌേᢥᦠ䉕䉅䈫䈮䋬ḓ⇎ฦᚲ䈪㓉ᴉ㒠㊂䈱⺞ᩏ䈏ⴕ 䉒䉏䈢䋨ዊ᧻ේ䊶ઁ䋬1999䋩䋮ᶏጯ䈮ㄭ䈇ਭ䇱ሶ䋨䈒䈓 䈚䋩ḓㄝ䈪 2.6-3 m䋬ᣣะ䋨䈵䉎䈏䋩ḓ᧲ጯ䈪 5 m 㓉䋬 ਃᣇḓධጯ䈪䈲ᴉ㒠䈚䈢䋮Ზᄌേၞ䈏ᶏ䈻િ 䈶䋬ᵤᵄ䈏⊒↢䈚䈢น⢻ᕈ䈏䈅䉎䋮 ᤨઍ䉕ᄢ䈐䈒ḽ䉍䋬701 ᐕ5 12 ᣣ䋨ᄢቲరᐕਃੑ ᣣ䋩⥰㢬ᴒ䈱ፉ䈫ጁፉ䈏㔡䈪ᴉ㒠䈚䈢વᛚ䈏䈅 䉎䋮䈱ፉઃㄭ䈱ᶏᐩᒻ䈏䋬ᄢቲ㔡䈪ᐢၞ 䈮Ზ䈱ᴉ㒠ㆇേ䈪↢䈛䈢䉅䈱䈎䋬⇼ⷞ䈘䉏䈩䈇䉎. - 76 -.
(3) 䋨⪤ේ䊶ઁ䋬1982䋩䋮 1927 ᐕ 3 7 ᣣർਤᓟ㔡䈲ඨፉ䈱㗖ㇱ䈮⊒↢䈚䋬 ᱫ⠪䈲੩ㇺᐭ䈾䈎ో䈪2䋬925ੱ䈮䈱䈿䈦䈢䋮䋬 㔡Ḯ䈱ㇹᢿጀ䈱৻ㇱಽ䈏䋬✂㊁↸䈮ᄤὼ⸥ᔨ‛䈫 䈚䈩ሽ䈘䉏䈩䈇䉎䋮䈖䈱㔡䈲ᵤᵄ䉕䈇䋬 ਤᓟඨ ፉᴪጯ䈪ᵄ㜞 1.2-1.5 m䋬ᶏጯ䈮ḷ䉏䋨↰ਛ㙚䋬1927䋩䋬 Ṫ⦁䈮ᵹⵍኂ䈏䈅䈦䈢䋮 ᵤᵄ䊙䉫䊆䉼䊠䊷䊄䈲䋬ᵄ 㜞ಽ䈎䉌䌭 = 0 䈫ផቯ䈘䉏䉎䋮䈠䈱䈾䈎䋬1963 ᐕ 3 27 ᣣ䈮⊒↢䈚䈢೨ጧᴒ㔡䈪䋬ᢕ⾐䈎䉌ዊᵿ䈮 䈎䈔䈩ዊⵍኂ䈏䈅䈦䈢䋮 §5䋮 䉃䈜䈶 ⧯⁜ḧጯ䉕ኻ⽎䈮䋬1964 ᐕᣂẟ䋬1983 ᐕᣣᧄᶏਛ ㇱ䋬1993 ᐕർᶏධᴒ䈱ฦᵤᵄ䈮䈧䈇䈩䋬ᴪጯၞ 䈪䈱ᵤᵄ䈱ዮ᛬ലᨐ䈫᷼ḧ䉶䉟䉲䊠䈫䈱㑐ㅪ䉕ᬌ⸛䈚 䈢䋮⸃ᨆ䈱⚿ᨐ䋬ᵤᵄ㜞䈲 1-2 m ⒟ᐲ䈪䈅䉍䋬㆙ᣇ䈎䉌 વ䈜䉎ᵤᵄ䈱ዮ᛬ലᨐ䈲ዊ䈘䈇䋮䈚䈎䈚䋬⥰㢬ḧᄖ 䈱ዊᯅ䈪䈲ዪ⊛䈭ᒻ᧦ઙ䈪Ფ࿁ 3.5 m 䈮㆐䈚䋬ᶐ ᳓ⵍኂ䉕䉅䈢䉌䈚䈢䋮䉁䈢䋬⧯⁜ḧጯ䈪䈲ᝄ↪䈫㊀ 䈭䉍䋬ᵤᵄೋേ䈎䉌 4-5 ᤨ㑆ᓟ䈮ᦨᄢᵄ䈮䈭䉎䈏ᄙ䈒䋬 ੍ႎ㕙䈪ᵈᗧ䈜䈼䈐േ․ᕈ䈪䈅䉎䈫ᜰ៰䈪䈐䉎䋮 ৻ᣇ䋬1662 ᐕㄭᳯ䊶⧯⁜㔡䈪ᵤᵄ䉕䈦䈢น⢻ᕈ 䈏䈅䉎䋮⧯⁜ḧౝᄖ䈮ᢙ᧦䈱ᵴᢿጀ⟲䈏⍮䉌䉏䈩䈍䉍䋬 䈖䉏䉌䈱ᵴേ䈮䈉ᵤᵄ䈱น⢻ᕈ䈮⇐ᗧ䈜䈼䈐䈪䈅 䉎䋮 ኻ⽎㔡䋺㩷 701 ᐕᄢቲ䋬1662 ᐕㄭᳯ䊶⧯⁜䋬1741 ᐕᷰ ፉᄢፉ䋬1833 ᐕጊᒻ⋵ᴒ䋬1927 ᐕർਤᓟ䋬1940 Ⓧਤ ᴒ䋬1964 ᐕᣂẟ䋬1983 ᐕᣣᧄᶏਛㇱ䋬1993 ᐕർᶏ ධᴒ䋮 ᢥ ₂ ⨹⾫৻䊶ㇺมཅት䋬1998䋬ᵤᵄ䈮䉋䈦䈩ബ䈘䉏䈢 ḧ䈱࿕ᝄേਛ䈱䊝䊷䊄ᰳ⪭䋬ೀᶏᵗ䋬ภᄖ No.15䋬77-81. ⍹ᯅసᒾ䊶ේ↰ᥓ䋬2006䋬ᣣᧄᶏ䈱ᧂ⍮䈱ᄢ㔡䈮 䉋䉎ᵤᵄ䉲䊚䊠䊧䊷䉲䊢䊮:⧯⁜ḧർᣇᴒ䈱႐ว䋬 ᣣᧄ㔡ቇળ⻠Ṷ੍Ⓜ㓸䋬⑺ቄᄢળ䋬C009. ⪤ේዅ␞✬⪺䋬1982䋬ฎ㔡ᱧผ⾗ᢱ䈫ᵴᢿጀ䈎䉌 䈘䈓䉎䋬᧲੩ᄢቇ ળ. ⠀㠽㩷 ᓼᄥ㇢䋬1984䋬ർᶏᷰፉᴒᵤᵄ䋨1741 ᐕ䋩䈱 േ䈱ౣᬌ⸛䋬㔡⎇ⓥᚲᒵႎ䋬59䋬115-125. ⠀㠽㩷 ᓼᄥ㇢䋬1990䋬ᄤ 4 ᐕ䋨1833䋩ጊᒻᴒ㔡䈫䈠 䈱ᵤᵄ䈱ⷙᮨ䋬㔡 2䋬43䋬227-232.. ⠀㠽㩷 ᓼᄥ㇢䋬1994a䋬ጊ㒶ᣇ䈱ᵤᵄ䈱․ᕈ䋬ᵤᵄ Ꮏቇ⎇ⓥႎ๔䋬11䋬33-40. ⠀㠽㩷 ᓼᄥ㇢䋬1994b䋬1993 ᐕർᶏධᴒ㔡ᵤᵄ 䈱ⷙᮨ䈍䉋䈶ᵄḮၞ䋬㔡 2䋬47䋬1-9. ⠀㠽㩷 ᓼᄥ㇢䋬1999䋬⢻⊓ඨፉ䈮䈍䈔䉎ᵤᵄ䈱ዮ᛬ല ᨐ䋬㔡 2䋬52䋬43-50. ᢥᒾ䊶᧻ᧄᥓ䋬1998䋬1741 ᐕᷰፉᄢፉἫጊᵤᵄ 䈱∥〔⺞ᩏ䋬ᵤᵄᎿቇ⎇ⓥႎ๔䋬15䋬85-105. 㔡⺞ᩏ⎇ⓥផㅴᧄㇱ䊶㔡⺞ᩏᆔຬળ䋬1997䋬ᣣᧄ 䈱㔡ᵴേⵍኂ㔡䈎䉌䈢ၞ䈱․ᓽ䋬 䋨⽷䋩㔡੍⍮✚ว⎇ⓥᝄ⥝ળ䋬391p. ᳇⽎ᐡ䋬1965䋬ᤘ 39 ᐕ 6 16 ᣣᣂẟ㔡⺞ᩏႎ๔䋬 ᳇⽎ᐡᛛⴚႎ๔䋬No.43. ᳇⽎ᐡ䋬1984䋬ᤘ 58 ᐕ䋨1983 ᐕ䋩ᣣᧄᶏਛㇱ㔡⺞ ᩏႎ๔䋬᳇⽎ᐡᛛⴚႎ๔䋬No.106. ᳇⽎ᐡ䋬1995䋬ᐔᚑ 5 ᐕ䋨1993 ᐕ䋩ർᶏධᴒ㔡 ⺞ᩏႎ๔䋬᳇⽎ᐡᛛⴚႎ๔䋬No.117. ዊ᧻ේ㩷 ℉䊶᳓㊁ᷡ⑲䊶㊄↰ᐔᄥ㇢䊶㗇⮮ቬቁ䊶ጊᩮ㩷 ඳ䋬1999䋬ผᢱ䈮䉋䉎 1662 ᐕኡᢥ㔡ᤨ䈱ਃᣇ ḓㄝ䈮䈍䈔䉎Ზᄌേ䈱ᓳర䋬ᱧผ㔡䋬 15䋬81-100. Nakano䋬M. and S. Unoki䋬1962䋬On the seiches䋨the secondary undulations of tides䋩 along the coast of Japan. Rec. Oceanog. Works Japan䋬 Spec. No.6䋬 169-214. ⥄ὼἴኂ⑼ቇ✚ว⎇ⓥ⃰䋨ઍ䋺ਸ਼ን৻㓶䋩䋬1984䋬 1983 ᐕᣣᧄᶏਛㇱ㔡䈮䉋䉎ἴኂ䈱✚ว⊛⺞ᩏ ⎇ⓥ䋬ᢥㇱ⋭⑼ቇ⎇ⓥᚑᨐ䋬386p. ↰ਛ㙚㩷 ⑲ਃ䋬1927䋬ᅏਤᓟ㔡䈱㓙ᶏጯ䈱㒠ㆇേ䋬 1-2䋬ቇ㔀䋬39 ᐕ䋬465 ภ䋬617-627䋬 704-717. ᧲ᄢ㔡⎇ⓥᚲ✬䋬1989䋬ᣂᣣᧄ㔡ผᢱ䋬ㆮ䋬 䋨␠䋩ᣣᧄ㔚᳇දળ䋬1222 p. ㇺมཅት䋬1987䋬㓝ጘ⻉ፉ䈱ᵤᵄ䈱ᱧผ䋬ೀ䋬 9䋬229-234. ㇺมཅት䊶ട⮮ஜੑ䊶⨹⾫৻䊶↰ᨑ䋬1994䋬ർᶏ ධᴒ㔡ᵤᵄ䈱ᣣᧄᶏጯ䈪䈱ᶐ᳓㜞䋬 ೀᶏᵗ䋬ภᄖ No.7䋬192-200. ㇺมཅት䊶⇌㩷 䊶⮮⾆ผ䊶⮮৻ᢅ䋬2002䋬ኡ రᐕ䋨1741䋩ᷰፉᄢፉྃἫᵤᵄ䈮䉋䉎ർᶏᴪጯ 䈪䈱ᶐ᳓㜞䈘䋬ೀᶏᵗ䋬ภᄖ No.28䋬15-44. ቝ⟤㩷 㦖ᄦ✬䋬1998䋬ᣣᧄ䈱ᱧผ㔡ผᢱ䋬ᜪㆮ䋬 䋨␠䋩ᣣᧄ㔚᳇දળ䋬512 p䋮 ቝ⟤㩷 㦖ᄦ✬䋬2002䋬ᣣᧄ䈱ᱧผ㔡ผᢱ䋬ᜪㆮੑ䋬 䋨␠䋩ᣣᧄ㔚᳇දળ䋬583 p䋮. - 77 -.
(4) -78-. ࿑ 1㩷 ᢕ⾐䈪䈱ᣂẟ䍃ᣣᧄᶏਛㇱ䊶ർᶏධᴒ㔡ᵤᵄ䈱ᬌầ⸥㍳䋮 Fig. 1. Tide-gauge records of the 1964 Niigata, 1983 Nihonkai-Chubu, and the 1993 SW. Hokkaido earthquake tsunamis observed at Tsuruga.. ࿑ 2㩷 ⥰㢬᧲᷼䈪䈱ᣂẟ䍃ᣣᧄᶏਛㇱ䊶ർᶏධᴒ㔡ᵤᵄ䈱ᬌầ⸥㍳䋮 Fig. 2. Tide-gauge records of the 1964 Niigata, 1983 Nihonkai-Chubu, and the 1993 SW. Hokkaido earthquake tsunamis observed at E. Maizuru..
(5) ࿑ 3㩷 ⧯⁜ḧጯ䈱ᵄ㜞ಽᏓ䋨ᣂẟ䍃ᣣᧄᶏਛㇱ䊶ർᶏධᴒ㔡ᵤᵄ䋩䋮 Fig. 3. Distribution of the tsunami heights in Wakasa Bay.. ࿑ 4䋨࿑䋩ർᶏධᴒ㔡ᵤᵄ䈱વ࿑䋨ᵄ㕙䋺5 ಽ㑆㓒䋩䋬䋨ਅ࿑䋩ᵄ㜞䈱ᵻ᳓䊶ዮ᛬ଥᢙ䈫ᵄ㜞ಽᏓ䈱 Ყセ䋮 Fig. 4. Refraction diagram of the 1993 SW. Hokkaido earthquake tsunami and the observed travel times (upper). Comparison of the shoaling-refraction factor (column) and the distribution of tsunami heights (lower).. - 79 -. ࿑ 5 ⧯⁜ḧጯ䈪䈱ᦨᄢᵄᦼ䈫ᵄ㜞䈫䈱㑐ଥ䋮 Fig. 5. Relation between the period of maximum wave and double amplitude of tsunamis in Wakasa Bay..
(6) ࿑ 6㩷 1741 ᐕᷰፉᄢፉ䈱ᵤᵄ䈍䉋䈶 1833 ᐕጊᒻ⋵ᴒ㔡ᵤᵄ䈱ᵄ㜞ಽᏓ䋮 Fig. 6 Distribution of inundation heights of the 1741 SW. Hokkaido tsunami and the 1844 Yamagata-Oki earthquake tsunami.. ࿑ 7㩷 ⧯⁜ḧㄝ䈱ᵴᢿጀ䈫㔡䍃ᵤᵄಽᏓ䋮 Fig. 7. Distribution of active faults, earthquakes, and tsunamis around the Wakasa Bay.. - 80 -.
(7)
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