歴史地震
第35号(2020) 39-47頁
受付日 2019/11/30, 受理日 2020/03/01

1703ᖺඖ⚘ᆅ㟈䛻䜘䜛ᮾᾏ㐨኱☾ᐟ䛛䜙ᑠ⏣ཎᐟ䛻䛛䛡䛶䛾⿕ᐖ䛸ᆅ┙䛸䛾㛵ಀᮾᾏ኱Ꮫ㻌 ᕤᏛ㒊䞉ᅵᮌᕤᏛ⛉㻌*㻌 ୕⚄㻌 ཌ

Study on Damage to Post-Towns from the Geotechnical Point of View
between Oiso and Odawara of Tokaido Road by the 1703 Genroku Earthquake
Atsushi MIKAMI
Department of Civil Engineering, Tokai University, 4-1-1 Kitakaname, Hiratsuka,
Kanagawa 259-1292, Japan
Enlarged and revised edition of historical documents on earthquakes in great Japan describes damage to post-towns
on the Tokaido road after the 1703 Genroku Earthquake. It had reported that there was a post-town called
Umezawa with almost no damage while all other post-towns between Totsuka and Odawara were severely damaged.
Interestingly, the non-damaged post-town area called Umezawa had also little damage during the 1923 Kanto
earthquake. This research discusses the reason why Umezawa had almost no damage from the geotechnical pointof view, by conducting microtremor measurement in the area between Oiso, Umezawa, Odawara. It was understoodthat dense sand soil deposit on the relatively shallow base amplified seismic ground motion less compared to otherareas.
Keywords: Tokaido, Post-Town, Genroku Earthquake, Microtremor.
㼲㻝㻚㻌 䛿䛨䜑䛻䛄ቑゞ኱᪥ᮏᆅ㟈ྐᩱ䛅䛾䛄⏑㟢ྀ䛅䛻䛿䠈㻝㻣㻜㻟 ᖺඖ⚘ᆅ㟈䛾㝿䠈䛂ᮾᾏ㐨➽䝝䠈䞉䞉䞉ᡞሯ䝶䝸ᑠ⏣ཎ䝬䝕䝝୙ṧ◚ᦆ䝅䝍䝸䠊㛫䚻䝜ᑠᐟ䝰ྠ䜽₽䝹䠊ణᑠ⏣ཎ䝖኱☾䝖䝜㛫䠈ᱵ⃝䝜ᐟ䝝䠈୍㌺䝰ಽ䝺䝈䠈ேⓙ䜰䝲䝅䝯䝸䛃䛸䛾グ㏙䛜䛒䜛䠊ᡞሯ䛛䜙ᑠ⏣ཎ䜎䛷䛜඲⁛䛧䛯୰䛻䛒䛳䛶䠈ᱵ⃝䝜ᐟ䛷䛿⿕ᐖ䛜ⓙ↓䛷䛒䛳䛯䛣䛸䜢ᣦ᦬䛧䛶䛔䜛䜒䛾䛷䠈䛣䜜䛿኱ᓮ䠄㻝㻥㻤㻟䠅䛻䜘䛳䛶ᆅ┙䛾ᙳ㡪䛻䛴䛔䛶ᣦ᦬䛧䛯䜒䛾䛸䛧䛶ྲྀ䜚ୖ䛢䜙䜜䛶䛔䜛䠊㻝㻥㻞㻟 ᖺ㛵ᮾᆅ㟈䛻䛴䛔䛶䠈䛄ᅵᆅศ㢮ᇶᮏㄪᰝ䛅㼇⚄ዉᕝ┴䠄㻝㻥㻤㻡㻘㻝㻥㻤㻢䠅㼉䛻♧䛥䜜䛶䛔䜛஧ᐑ⏫䛾ᐙᒇಽቯ⋡䛾ศᕸ䜢ぢ䜛䛸䠈໭㒊䛾୍Ⰽᆅ༊䛻䛿䜋䛸䜣䛹䛾ᐙ䛜ಽቯ䛧䛯ᆅᇦ䛜䛒䛳䛯୍᪉䛷䠈Ⲕᒇ⏫䛾ᱵ⃝䛾ᐟ䛜䛒䛳䛯ᆅᇦ䠄ὀ䠖ᱵ⃝䛾⌧ᅾ䛾ᆅྡ䛿ᱵἑ䛜⏝䛔䜙䜜䛶䛔䜛䠅䛷䛿ಽቯ䛧䛯ᐙ䛿䛤䛟䜎䜜䛷䛒䛳䛯䛣䛸䛜グ㏙䛥䜜䛶䛚䜚䠈ྠ䛨஧ᐑ⏫ෆ䛷䜒ᱵ⃝䛾ᐟ䛜䛒䛳䛯ᆅᇦ䛿ᆅ㟈⿕ᐖ䛜ᑡ䛺䛛䛳䛯䛣䛸䛜䜟䛛䜛䠊㻌㏆᥋䛩䜛ᆅᇦ䛷䛒䛳䛶䜒⿕ᐖ䛜኱䛝䛟␗䛺䜛⌧㇟䛿䠈⿕ᐖᆅ㟈䛾Ⓨ⏕䛻㝿䛧䜘䛟ぢ䜙䜜䠈ᵓ㐀ⓗ䛺せᅉ䠈ᆅ┙ⓗ䛺せᅉ䛺䛹䛜ᣦ᦬䛥䜜䜛䠊ᆅ┙ⓗ䛺せᅉ䛜ཎᅉ䛾ሙྜ䛻䛿䠈ḟ䛾㟈⅏䛻䛚䛔䛶䜒ᆅ┙ᵓ㐀䛜኱䛝䛟ᨵኚ䠈ᨵⰋ䛥䜜䛶䛔䛺䛔㝈䜚䠈ྠᵝ䛺⌧㇟䛜⧞䜚㏉䛥䜜䜛ྍ⬟ᛶ䛜䛒䜛䠊䛭䛾䛯䜑䠈Ṕྐᆅ㟈䛛䜙Ꮫ䜃䠈⌧௦䛾ᆅ㟈㜵⅏䛻ά䛛䛧䛶䛔䛟䛣䛸䛜⫢せ䛷䛒䜛䠊㻌ᮏ◊✲䛷䛿䠈ᱵ⃝䛾ᐟ䜢䛿䛥䜐 㻞 䛴䛾ᐟሙ䛾䜶䝸䜰䛻᳨ウᑐ㇟䜢⤠䜚䠈䛣䜜䜙䛾Ṕྐᆅ㟈䛻䜘䜛⿕ᐖⓎ⏕䛾᭷↓䛻䛴䛔䛶䠈ᆅ┙䛾ᙳ㡪䛸䛔䛖ほⅬ䛛䜙ㄝ᫂䜢ヨ䜏䜛䠊ᙜ᫬䛸⌧ᅾ䛷ᆅᇦ䛾ᆅ┙≉ᛶ䛜኱䛝䛟ᨵኚ䛥䜜䛶䛔䛺䛔䛸䛾๓ᥦ䛾ඖ䠈ᆅ┙䛾䝪䞊䝸䞁䜾䝕䞊䝍䛺䛹䛾බ㛤᝟ሗ䛾฼⏝䛻ຍ䛘䠈⌧ᆅ䛷䛾ᖖ᫬ᚤືほ 䜢 㻝㻥 Ⅼ䛷ᐇ᪋䛧䠈᳨ウ䛧䛯⤖ᯝ䛻䛴䛔䛶ሗ࿌䛧䠈⿕ᐖ䛾⛬ᗘ䜢ᕥྑ䛧䛯せᅉ䛻䛴䛔䛶⪃ᐹ䛩䜛䠊㼲㻞㻚㻌 ᮾᾏ㐨኱☾ᐟ䛛䜙ᑠ⏣ཎᐟ䛻䛛䛡䛶䛾⿕ᐖ᳨ウᑐ㇟ᆅᇦ䜢ᅗ䠍䛻♧䛩䠄ᚋฟ䛾ᅗ䛾⠊ᅖ䜢Ⅼ⥺䛷♧䛩䛸䛸䜒䛻䠈ᅗ␒ྕ䜢♧䛩䠅䠊ᮾᾏ㐨 㻤 ␒┠䛾ᐟሙ䛷䛒䜛኱☾ᐟ䛛䜙 㻥 ␒┠䛾ᑠ⏣ཎᐟ䜎䛷䛾⣙* 䛈259-1292 ⚄ዉᕝ┴ᖹሯᕷ໭㔠┠ 4-1-1㟁Ꮚ䝯䞊䝹: atsushi.mikamii ttokai.ac.jp- 39 -

ᅗ 1 ᳨ウᑐ㇟ᆅᇦ䠄ᅜᅵᆅ⌮㝔䠈㟁Ꮚᅜᅵ Web 䜢౑⏝䠅䠊
Fig.1 Investigated area (Web map operated by the Geospatial Information Authority of Japan was used).
㻝㻣㼗㼙 䛾༊㛫䛜᳨ウᑐ㇟䛷䛒䜛䠊㻝㻤㻠㻟 ᖺ䛻䛚䛔䛶኱☾ᐟ䛻䛿ᑠᔱ䠈ᑿୖ䠈▼஭䛾 㻟 䛴䛾ᮏ㝕䛸 㻢㻢 ㌺䛾᪑⡲䛜䛒䜚䠈ᑠ⏣ཎᐟ䛻䛿䠈ᮏ㝕䠈⬥ᮏ㝕䛜ྛ 㻠 ㌺䠈᪑⡲ 㻥㻡 ㌺䛜䛒䛳䛯㼇ඵᮌ䠄㻞㻜㻝㻥䠅㼉䠊㻌ᆅᙧⓗ䛻䛿䠈ᮾ䛿኱☾ୣ㝠䛜ᗈ䛜䜚䠈す䜈⾜䛟䛸㓇ໝᕝ䛻䜘䛳䛶ᙧᡂ䛥䜜䛯㊊᯶ᖹ㔝䛜ᗈ䛜䜛ᆅᇦ䛷䛒䜛䠊㻌㻞㻚㻟㻌 㛵ᮾᆅ㟈䛾㝿䛾⿕ᐖ䛾ᴫせ㻌㻝㻥㻞㻟 ᖺ㛵ᮾᆅ㟈䛾㝿䛻䛿䠈኱☾⏫䠈ᑠ⏣ཎ⏫䛸䜒⏒኱䛺⿕ᐖ䛻ぢ⯙䜟䜜䛯䠊኱☾ᑠᏛᰯᰯ⯋䜔኱☾㥐⯋䛿ಽቯ䛧䠈㧗㯇ᒣ௜㏆䜢㉮⾜䛧䛶䛔䛯ิ㌴䛿㌿そ䛧䛯䛣䛸䛿䛄኱☾⏫ྐ㻌 㻣 ㏻ྐ⦅䛅䛻グ㏙䛥䜜䛶䛔䜛䠊䛄㛵ᮾ኱㟈⅏ㄅ䞉⚄ዉᕝ⦅䛅䠈䛄኱☾⏫ྐ㻌 㻣 ㏻ྐ⦅䛅䛻䜘䜜䜀䠈኱☾⏫䛾඲༙₽ᐙᒇ䛿 㻠㻡㻜 ᡞ䛷䠈඲ᡞ䛻㻞㻚㻝㻌 ᱵ⃝䛾ᐟ㻌ᑐ䛩䜛๭ྜ䛿 㻞㻢㻑䛷䠈ᖹሯ⏫䛾 㻤㻜㻑䜢኱䛝䛟ୗᅇ䛳䛶䛔䜛䠊ᅜᗓᮧ䛾඲༙₽ᐙᒇ䛿 㻡㻣㻡 ᡞ䠈඲ᡞ䛻ᑐ䛩䜛ᱵ⃝䛾ᐟ䛿䠈ᮾᾏ㐨䛾䠔␒┠䛾ᐟሙ䛾኱☾ᐟ䛸䠕๭ྜ䛿 㻤㻟㻑䛷䛒䛳䛯䠊䛣䛾䜘䛖䛻䠈኱☾⏫䛾⿕ᐖ䛾๭␒┠䛾ᐟሙ䛾ᑠ⏣ཎᐟ䛾㛫䛻䛒䛳䛯㛫䛾ᐟ䠄䛒䛔䛾ྜ䛿௚䛻ẚ䜉䛶ᑠ䛥䛔䠊㻌䛧䜕䛟䠅䛷䛒䜛䠊ඖ䚻䛿ᱵ⃝䛾❧ሙ䛸࿧䜀䜜䜛ఇ᠁ᡤᑠ⏣ཎ䛾⿕ᐖ䜒⏒኱䛷䠈㥐⯋䛜ಽቯ䛧䛯௚䠈⏫䛾䛷䛒䛳䛯䛜䠈Ⲕᒇᮏ㝕䜢ྡ஌䜛ᯇᒇ䜢୰ᚰ䛻䠈Ⲕᗑ୰ᚰ㒊䛾Ꮫᰯ䛜඲㒊ಽ䞉ᔂቯ䛧䛯䛣䛸䛜ሗ࿌䛥䜜䛶䜔ၟᐙ䛜୪䜃䠈䛥䛺䛜䜙ᐟሙ䛾య䜢䛺䛧䛶䛔䛯㼇஧ᐑ䛔䜛㼇ᑠ⏣ཎᕷ䠄㻞㻜㻜㻝䠅㼉䠊ᑠ⏣ཎ⏫䛾඲༙₽ᡞᩘ䛿⏫䠄㻝㻥㻥㻠䠅㼉䠊ᆅᙧⓗ䛻䛿◁ୣ䛾ୖ䛻❧ᆅ䛧䠈᪩䛟䛛䜙㻞㻠㻠㻢 ᡞ䛷䠈඲ᡞ䛻ᑐ䛩䜛๭ྜ䛿 㻠㻣㻑䛷䛒䛳䛯䠊ຍ䛘
㛤Ⓨ䛥䜜䛯䠊㻌
䛶䠈඲↝ᐙᒇ䛜 㻞㻝㻞㻢 ᡞ䜒䛒䜚䠈ⅆ⅏䛻䜘䜛⿕ᐖ䜒኱䛝䛛䛳䛯䠊㻌㻞㻚㻞㻌 ඖ⚘ᆅ㟈䛻䜘䜛኱☾ᐟ䛛䜙ᑠ⏣ཎᐟ䛻䛛䛡䛶䛾ᱵ⃝䛾ᐟ䛾䛒䛳䛯஧ᐑ⏫䛻⿕ᐖ䛜䛺䛛䛳䛯䜟䛡䛷⿕ᐖ㻌㻝㻣㻜㻟 ᖺඖ⚘ᆅ㟈䛻䜘䜛ᮾᾏ㐨䛾⿕ᐖ䛻䛴䛔䛶䛿䠈 䛿䛺䛔䠊஧ᐑ㥐䛾㥐⯋䛿ಽቯ䛧䛯௚䠈䛄኱☾⏫ྐ䛅䛻䜘䜜䜀䠈䛂୰㔛᪉㠃䝜ᐙᒇṤ䝗඲₽䝅䞉䞉䞉䛃䛾⿕ᐖ䛾໭ཎ௚䛻䜘䛳䛶ヲ䛧䛟ሗ࿌䛥䜜䛶䛔䜛䠊໭ཎ䠄㻞㻜㻝㻟䠅䛿
グ㏙䜒ぢ䜙䜜䜛䠊࿃ጔᮧ䛾඲༙₽ᡞᩘ䛿䠈䛄㛵ᮾ኱䛄㻝㻣㻜㻟 ඖ⚘ᆅ㟈ሗ࿌᭩䛅䛻䛚䛔䛶䠈ி㒔ୗ㬞⚄♫䛾㟈⅏ㄅ䞉⚄ዉᕝ⦅䛅䛻䜘䜜䜀 㻤㻢㻞 ᡞ䠈䛄஧ᐑ⏫ྐ䛅䛻䜘⚄⫋䛷䛒䜛᲍ᮌ♸அ䛻䜘䜚䜎䛸䜑䜙䜜䛯䛄♸அᆅ㟈㐨䜜䜀 㻣㻤㻞 ᡞ䛷䛒䜛䠊඲ᡞᩘ䜢 㻝㻟㻠㻟 ᡞ䛸䛩䜛䛸䠈⿕ᐖグ䛅䜢䜒䛸䛻ᡞሯᐟ䛛䜙⟽᰿ᐟ䜎䛷䛾⿕ᐖ䜢᫂䜙䛛䛻䛾๭ྜ䛿䠈䛭䜜䛮䜜 㻢㻠㻑䠈㻡㻤㻑䛸䛺䜚䠈㻢 ๭⛬ᗘ䛾඲༙䛧䛶䛚䜚䠈䛭䜜䛻䜘䜜䜀䠈ᅜᗓ䠄኱☾⏫䠅䛷䛿ಽቯ䛧䛯₽⿕ᐖ䛜䛒䛳䛯䜒䛾䛸⪃䛘䜙䜜䜛䠊㻌ᐙ䛿ᑡ䛺䛔䛃䠈ᱵἑ䠄஧ᐑ⏫䠅䛷䛿䛂䠒䠈䠓㌺ಽ₽䛃䛸グ䛯䛰䛧䠈ᱵ⃝䛾ᐟ䛾䛒䛳䛯䛒䛯䜚䛾⿕ᐖ䛿䛂ಽቯ䛧
㏙䛧䛶䛔䜛䠊䛭䛾୍᪉䛷䠈䛣䜜䜙䛾ᮾഃ䛾኱☾䛷䛾⏒䛯ᐙ䛿䛤䛟䜎䜜䛺≉Ṧ䛺ሙྜ䛷䠈䜋䛸䜣䛹䛾ᐙ䛿⿕ᐖ኱䛺⿕ᐖ䜔すഃ䛾ᅜᗓὠ䠄ᑠ⏣ཎ䠅䛷䛿䛂ᰕ䛜❧䛳䛶䛜䛺䛛䛳䛯䛛䛤䛟䜟䛪䛛䛷䛒䛳䛯ᆅᇦ䛃䛸ሗ࿌䛥䜜䛶䛔䜛ᐙ䛿䠍㌺䜒䛺䛟䞉䞉䞉䛃䛸グ㏙䛧䛶䛚䜚䠈ᅜᗓ䜔ᱵἑ䛔䜛㼇⚄ዉᕝ┴䠄㻝㻥㻤㻡㻘㻝㻥㻤㻢䠅㼉䠊㻌䛜≉␗䛺ᆅᇦ䛷䛒䛳䛯ྍ⬟ᛶ䛜ఛ䜟䜜䜛䠊㻌- 40 -

䛔ሙྜ䛜ከ䛔䠊䛭䛾௚䛾䝕䞊䝍䝧䞊䝇䛸䛧䛶䠈䛄㻷㼡㼚㼕㻶㼕㼎㼍㼚䛅䠄㼔㼠㼠㼜㻦㻛㻛㼣㼣㼣㻚㼗㼡㼚㼕㼖㼕㼎㼍㼚㻚㼜㼣㼞㼕㻚㼓㼛㻚㼖㼜㻛㼖㼜㻛䠅䛺䛹䜒䛒䜛䠊ᮏ◊✲䛷䛿䠈᭩⡠䛻ྵ䜎䜜䜛䝪䞊䝸䞁䜾䝕䞊䝍䜒ά⏝䛩䜛䠊㻌㻟㻚㻞㻌 ᆅ┙䛾ᖖ᫬ᚤືほ 㻌ู䛾ᆅ┙ㄪᰝ᪉ἲ䛸䛧䛶䠈ᆅ┙䛾ᖖ᫬ᚤືㄪᰝ䜢ᐇ᪋䛧䛯䠊䛣䛣䛷䛿Ⲕᒇඣ❺㤋䛷䛾ᚤືほ ⤖ᯝ䛻䛴䛔䛶ሗ࿌䛩䜛䠊ୖୗ䠈༡໭䠈ᮾすᡂศ䜢 㻝㻜㻜㻴㼦 䝃䞁䝥䝸䞁䜾䛷 㻟 ศ㛫ほ 䛧䛯䜒䛾䛛䜙䠈㻞㻜㻚㻠㻤 ⛊ศ䜢 㻡༊㛫ᢳฟ䛧䠈㻴㻛㼂 䝇䝨䜽䝖䝹ẚ䜢ồ䜑䛯䜒䛾䜢༊㛫ᖹᆒ䛧䠈䛥䜙䛻Ỉᖹ 㻞 ᪉ྥᖹᆒ䛧䛯䜒䛾䛜ᅗ 㻞 䛷䛒䜛䠊ᆅ┙䛾༟㉺᣺ືᩘ䛿䠈㻴㻛㼂 䝇䝨䜽䝖䝹ẚ䛾䝢䞊䜽᣺ືᩘ䛸䛧䛶୚䛘䜙䜜䠈䛣䛾ሙྜ䛿䠈⣙ 㻝㻚㻢㻝㻔㻴㼦㻕䛸᥎ᐃ䛥䜜䜛䠊㻌 㻌

ᅗ2

H/V 䝇䝨䜽䝖䝹ẚ䛛䜙䛾ᆅ┙䛾༟㉺᣺ືᩘ䛾᥎ᐃ䠊
Fig.2 Evaluation of the predominant frequencyof ground from the H/V spectral ratio.

㼲㻠㻚㻌 ᆅ┙ㄪᰝᆅⅬ䛸ㄪᰝ⤖ᯝ䠈⪃ᐹ㻌㻌㼲㻟㻚㻌 ᆅ┙ㄪᰝ䛾᪉ἲ㻌ᆅ┙ⓗ䛺せᅉ䜢᳨ウ䛩䜛䛻䛒䛯䜚䠈ᮏ◊✲䛷䛿 㻞✀㢮䛾᪉ἲ䜢⏝䛔䛶䛔䜛䠊㻝 䛴䛿䠈ᆅ┙䛾䝪䞊䝸䞁䜾䝕䞊䝍䜢⏝䛔䜛᪉ἲ䛷䠈䜒䛖䠍䛴䛿ᆅ┙䛾ᖖ᫬ᚤືほ䛷䛒䜛䠊㻌㻠㻚㻝㻌 ᳨ウᑐ㇟ᆅᇦ㻌᳨ウᑐ㇟ᆅᇦ䛿ᅗ 㻝 䛻♧䛧䛯㏻䜚䛷䛒䜛䛜䠈௨ୗ䛷䛿䠈኱☾ᐟ䠈ᱵ⃝䛾ᐟ䠈኱☾ᐟ䛾 㻟 䛴䛾ᐟሙ㊧ᆅ䜔䛭䛾䛤䛟㏆ഐ䛷䛾ᚤືほ ⤖ᯝ䜢ẚ㍑䛧䛯ᚋ䠈䛭䜜䛮䜜䛾ᆅᇦ≉ᛶ䜢ᢕᥱ䛩䜉䛟䠈ᚤືほ 䜢ᐇ᪋䛧䛯䠊㻌኱☾ᐟ䛻䛴䛔䛶䛿䠈ᑠᔱᮏ㝕㊧ᆅ䛛䜙⣙ 㻡㻜㼙 㞳䜜䛯኱☾⏫ᾘ㜵⨫䛾ᩜᆅෆ䛷ᚤືほ 䜢ᐇ᪋䛧䛯䠊ᱵ⃝䛾ᐟ䛿Ⲕᒇᮏ㝕ᯇᒇ㊧ᆅ䛷䠈ᑠ⏣ཎᐟ䛿ΎỈ㔠ᕥ⾨㛛ᮏ㝕㊧ᆅ䛷䛾ㄪᰝ䜢ᐇ᪋䛧䛯䠊㻌㻟㻚㻝㻌 ᆅ┙䛾䝪䞊䝸䞁䜾䝕䞊䝍䛾ά⏝㻌᳨ウᑐ㇟ᆅᇦ䛻䛚䛔䛶䛿䠈䛄䛛䛺䛜䜟ᆅ㉁᝟ሗ䝬䝑䝥䛅䠄㼔㼠㼠㼜㻦㻛㻛㼣㼣㼣㻚㼗㼍㼚㼍㼓㼍㼣㼍㻙㼎㼛㼞㼕㼚㼓㻚㼖㼜㻛䠅䛜௦⾲ⓗ䛷䛒䜛䠊䜴䜵䝤䝃䜲䝖䜢㏻䛨䛶බ㛤䛥䜜䛶䛔䜛⚄ዉᕝ┴ෆ䛾 㻝㻞㻘㻜㻜㻜 ᮏ௨ୖ䛾䝪䞊䝸䞁䜾䝕䞊䝍䜢ཧ↷䛩䜛䠊䛯䛰䛧䠈බඹ஦ᴗ䛷⾜䜟䜜䛯䝪䞊䝸䞁䜾ㄪᰝ⤖ᯝ䜢᝟ሗබ㛤䛧䛶䛔䜛䜒䛾䛷䛒䜛䛯䜑䠈䝪䞊䝸䞁䜾ㄪᰝ఩⨨䛿ᆒ➼䛻ศᕸ䛧䛶䛔䜛䜟䛡䛷䛿䛺䛟䠈䜎䛯ㄪᰝ῝䛥䜒ᵝ䚻䛷䠈౛䛘䜀䠈ୗỈ㐨ㄪᰝ䛾䝪䞊䝸䞁䜾῝䛥䛿ὸ䢵䢰䢷㻠㻚㻞 ᐟሙ㊧ᆅ䛷䛾ㄪᰝ⤖ᯝ᭱ึ䛻ᅗ 㻟 䛻䛚䛔䛶䠈㻟 䛴䛾ᐟሙ㊧ᆅ䛷䛾ᚤືほ

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䣈䣴䣧䣳䣷䣧䣰䣥䣻䢪䣊䣼䢫(a) ኱☾ᐟ䠄4.25Hz䠅(b)ᱵ⃝䛾ᐟ䠄2.78Hz䠅(c)ᑠ⏣ཎᐟ䠄0.78Hz䠅ᅗ 3 ኱☾ᐟ䠈ᱵ⃝䛾ᐟ䠈ᑠ⏣ཎᐟ䛷䛾ᚤືほ ⤖ᯝ䠊Fig.3 Microtremor measurements at the former sites of post-towns at Oiso, Umezawa and Odawara.

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ᅗ 4 ᱵ⃝䛾ᐟ௜㏆䠄ᅜᅵᆅ⌮㝔䠈㟁Ꮚᅜᅵ Web 䜢౑⏝䠅䠊
Fig.4 Investigated area in the vicinity of former site of Umezawa post-town(Web map operated by the Geospatial Information Authority of Japan was used).

ᅗ 5 Ἀ✚ᒙᇶᗏ㠃῝ᗘ䠄ฟ඾䠖⚄ዉᕝ┴ᆅ┙ᆅ㉁ᅗ[⚄ዉᕝ┴䠄1971䠅]䠅䠊
Fig.5 Contour map that shows depths to the bottom of alluvium.
(Source: Geological map of Kanagawa [Kanagawa Pref.(1971)])⤖ᯝ䜢ẚ㍑䛩䜛䠊๓㏙䛾䜘䛖䛻䠈᫬้Ṕ䛛䜙 㻡 ༊㛫ᢳฟ䛧䠈ィ⟬䛧䛯ಶ䚻䛾 㻴㻛㼂 䝇䝨䜽䝖䝹ẚ䜢Ⅼ⥺䛷䠈ᖹᆒ໬䛧䛯䜒䛾䜢ኴ⥺䛷♧䛧䛶䛔䜛䠊㻟 䛴䛾ᐟሙ㊧ᆅ䛷䛾 㻴㻛㼂 䝇䝨䜽䝖䝹ẚ䛾䝢䞊䜽᣺ືᩘ䛛䜙᥎ᐃ䛥䜜䜛ᆅ┙䛾༟㉺᣺ືᩘ䛿䠈䛭䜜䛮䜜䠈㻠㻚㻞㻡㻴㼦䠄኱☾ᐟ䠅䠈㻞㻚㻣㻤㻴㼦䠄ᱵ⃝䛾ᐟ䠅䠈㻜㻚㻣㻤㻴㼦䠄ᑠ⏣ཎᐟ䠅䛸䛺䛳䛯䠊༟㉺᣺ືᩘ䛻ຍ䛘䠈㻴㻛㼂 䝇䝨䜽䝖䝹ẚ䛾ᙧ≧䛜኱䛝䛟␗䛺䜛䛣䛸䛛䜙䠈䛣䜜䜙䛾ᆅ┙≉ᛶ䛿኱䛝䛟␗䛺䜛䜒䛾䛸᥎ᐹ䛥䜜䜛䠊௨ୗ䠈䛭䜜䛮䜜䠈ᆅᇦ䛤䛸䛻ぢ䛶䛔䛟䠊㻌- 42 -䢹䢸䢷䣊䢱䣘䢢䣕䣲䣧䣥䣶䣴䣷䣯㻠㻚㻟㻌 ᱵἑ࿘㎶ᆅᇦ䛾ᐟ䛸䛭䛾⿕ᐖ㻌䜎䛪䠈⿕ᐖ䛜ᑡ䛺䛛䛳䛯ᱵἑᆅᇦ䛾ᆅ┙䛾≉ᚩ䜢ぢ䛶䛔䛟䠊ᅗ 㻠 䛻ᱵ⃝䛾ᐟ䛾࿘㎶ᆅᇦ䛷䛾ᚤືㄪᰝ⤖ᯝ䜢♧䛩䠊ᩘ್䛷♧䛥䜜䛶䛔䜛䜒䛾䛜༟㉺᣺ືᩘ䠄㻴㼦䠅䛷䠈グྕ䛿ᚋ㏙䛾䜘䛖䛻㐨㊰ᶫ♧᪉᭩䛾ศ㢮䛻ᛂ䛨䠈䊠✀ᆅ┙䚽䠈䊡✀ᆅ┙䖂䠈䊢✀ᆅ┙䖃䛷♧䛧䛶䛔䜛䠊ᱵ⃝䛾ᐟ䛾୰䛷䜒すഃ䛻఩⨨䛧䛯䠈Ⲕᒇᮏ㝕ᯇᒇ㊧ᆅ䛷䛾ᆅ┙䛾༟㉺᣺ືᩘ䛿 㻞㻚㻣㻤㻴㼦 䛷䛒䛳䛯䠊䛭䜜䜘䜚ᮾഃ䛾ᆅᇦ䜢ぢ䜛䛸䠈༟㉺᣺ືᩘ䛜 㻤䡚㻝㻜㻴㼦 ⛬ᗘ䛸䛺䛳䛶䛚䜚䠈䛣䛾ᆅᇦ䛜◳㉁䛺ᆅ┙䛷䛒䜛䛣䛸䛜᥎ᐹ䛥䜜䜛䠊㛵ᮾᆅ㟈䛾㝿䠈஧ᐑ⏫䛷⿕ᐖ䛜ᑡ䛺䛛䛳䛯ᆅᇦ䛜䛒䛳䛯䛣䛸䜢๓㏙䛧䛯䛜䠈䛭䜜䛜䛣䛾䜶䝸䜰䛸୍⮴䛩䜛䠊㻌୍᪉䠈ᚤືほ Ⅼ㻔㻝㻢㻕䛿䠈༟㉺᣺ືᩘ䛜⣙ 㻝㻴㼦 䛸௚䜘䜚ᑠ䛥䛟䛺䛳䛶䛔䜛䛜䠈䛣䛾䛒䛯䜚䛾ሙᡤ䛿䠈ⴱᕝὶᇦ䛾஧ᐑ⏫୰㔛䛸䛔䛖ᆅᇦ䛷䠈஧ᐑ⏫ෆ䛷䜒㌾ᙅᆅ┙䛜ཌ䛟ሁ✚䛧䛯ሙᡤ䛷䛒䜛䛣䛸䛜䛄஧ᐑ⏫㒓ᅵㄅ䛅䛻ᣦ᦬䛥䜜䛶䛚䜚䠈䛭䛾䜶䝸䜰䛻タ⨨䛥䜜䛶䛔䜛஧ᐑ⏫䛾㟈ᗘほ Ⅼ䛷䛿䠈㻞㻜㻝㻡 ᖺ 㻡 ᭶ 㻟㻜 ᪥䛾ᑠ➟ཎㅖᓥす᪉Ἀᆅ㟈䛾㝿䠈≉␗䛺䠄࿘㎶䜘䜚኱䛝䛔䠅㟈ᗘ䛾್䜢ィ 䛧䛯㼇ෆ㛶ᗓ䠄㻞㻜㻝㻡䠅㼉䠊㻌䜘䜚῝䛟⪃ᐹ䛩䜛䛯䜑䠈䛄⚄ዉᕝ┴ᆅ┙ᆅ㉁ᅗ䛅䛾Ἀ✚ᒙᇶᗏ㠃῝ᗘ䜢ཧ↷䛩䜛䠊ᅗ 㻡 䛻Ἀ✚ᒙᇶᗏ㠃῝ᗘ䜢♧䛩䛸䛸䜒䛻䠈㛵ᮾᆅ㟈䛾㝿䠈⿕ᐖ䛜ᑠ䛥䛛䛳䛯䜶䝸䜰䜢Ⅼ⥺䛷䠈Ⲕᒇᮏ㝕ᯇᒇ䜢䖂䛷䠈ᚤືほⅬ㻔㻝㻢㻕䜢䕧䛷♧䛧䛶䛔䜛䠄ᅗ 㻡 䛾⠊ᅖ䜢ᅗ 㻠 䛻Ⅼ⥺

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䣈䣴䣧䣳䣷䣧䣰䣥䣻䢪䣊䣼䢫ᅗ 6 ᚤືほ Ⅼ(16)䛾 H/V 䝇䝨䜽䝖䝹ẚ䠊
Fig.6 H/V spectral ratio at the measurementsite (16).
䛷♧䛩䠅䠊ᱵἑᆅᇦ䛿ᇶᗏ㠃῝ᗘ䛜ὸ䛔䛣䛸䛜䜟䛛䜛䠊䛄஧ᐑ⏫ྐ䛅㼇஧ᐑ⏫䠄㻝㻥㻥㻜䠅㼉䛻䜘䜜䜀䠈䛣䛾ᆅᇦ䛿䠈ᆅ㉁ⓗ䛻䛿୰ᮧཎ㠃䛸࿧䜀䜜䜛᏶᪂ୡẁୣ㠃䛻ศ㢮䛥䜜䠈ẁୣ㠃䛿ୗཎᒙ䠄Ἀ✚ᒙ䠅䛛䜙䛺䜛䠊௨ୗ䠈䝪䞊䝸䞁䜾㈨ᩱ䜢䜒䛸䛻Ἀ✚ᆅ┙䛾ᛶ㉁䜢⪃ᐹ䛧䛶䛔䛟䠊㻌䛄஧ᐑ⏫ྐ䛅㼇஧ᐑ⏫䠄㻝㻥㻥㻜䠅㼉䛻䛿䠈௜㏆䛾す•䝞䜲䝟䝇䜔⏫❧య⫱㤋䠄ᚤືほ Ⅼ㻔㻝㻜㻕䠅䛷ᚓ䜙䜜䛯䝪䞊䝸䞁䜾䝕䞊䝍䛜ᥖ㍕䛥䜜䛶䛚䜚䠈䛭䜜䛻䜘䜛䛸䠈ୗཎᒙ䛿୺䛻◁ᒙ䠈◁♟ᒙ䛛䜙䛺䜚䠄୍㒊䠈Ἶᒙ䜢ྵ䜐ሙྜᅗ7኱☾ᐟ䛸䛭䛾࿘㎶䠄ᅜᅵᆅ⌮㝔䠈㟁Ꮚᅜᅵ Web 䜢౑⏝䠅䠊
Fig.7 Former site of Oiso post-town and its vicinity area
(Web map operated by the Geospatial Information Authority of Japan was used).

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ᅗ 8 ᑠ⏣ཎᐟ䛸䛭䛾࿘㎶ᆅᇦ䛷䛾ᚤືほ 䠄ᅜᅵᆅ⌮㝔䠈㟁Ꮚᅜᅵ Web 䜢౑⏝䠅䠊
Fig.8 Microtremor measurement at the former site of Odawara post-town and its vicinity area
(Web map operated by the Geospatial Information Authority of Japan was used).
䛒䜚䠅䠈䛭䛾ཌ䛥䛿 㻞㻜㼙 ๓ᚋ䛸᥎ᐃ䛥䜜䛶䛔䜛䠊ಶ䚻䛾䝪䞊䝸䞁䜾᝟ሗ䛻 㻺 ್䛿ᥖ㍕䛥䜜䛶䛔䛺䛔䛜䠈ᆅ⾲㠃ୗᩘ 㼙 ௨῝䛷䛿 㻺 ್䛜 㻡㻜 ௨ୖ䜢♧䛧䠈㠀ᖖ䛻䜘䛟⥾䜎䛳䛯◁ᒙ䛷䛒䜛䛸䛾グ㏙䛜ぢ䜙䜜䜛䠊㻌ᇶᗏ㠃ୖ䛻ሁ✚䛧䛯◁㉁ᆅ┙䛾๛ᛶ䠄䛫䜣᩿Ἴ㏿ᗘ䠅䛾᥎ᐃ䜢ヨ䜏䜛䠊ᅗ 㻡 䜘䜚ᇶᗏ㠃῝ᗘ䛿㻙㻞䡚㻙㻟㼙 ⛬ᗘ䛷䛒䜛䠊⌧ᆅㄪᰝ䛛䜙Ⲕᒇᮏ㝕ᯇᒇ㊧ᆅ䛾ᶆ㧗䛿⣙ 㻞㻟㼙䠈㻴㻛㼂 䝇䝨䜽䝖䝹ẚ䛛䜙ᆅ┙䛾༟㉺᣺ືᩘ䛿⣙ 㻞㻚㻤㻴㼦 䛷䛒䜛䠊௨ୖ䛛䜙䠈㻝㻛㻠 Ἴ㛗๎䠄㼀㻩㻠㻴㻌㻛㼂㼟䠈㼀㻩ᆅ┙䛾༟㉺࿘ᮇ䠈㼂㼟㻩ᆅ┙䛾䛫䜣᩿Ἴ㏿ᗘ䠈㻴㻩⾲ᒙᆅ┙ཌ䠅䜢㐺⏝䛩䜛䛸䠈㼂㼟㻩㻞㻤㻜㼙㻛㼟 ⛬ᗘ䛸䛺䛳䛯䠊๓㏙䛾䝪䞊䝸䞁䜾䝕䞊䝍䛾⪃ᐹ䛸ే䛫䛶⪃䛘䜛䛸䠈䛣䛾ᆅᇦ䛾ᆅ┙䛿㠀ᖖ䛻⥾䜎䛳䛯◁ᒙ䛛䜙䛺䜛䜒䛾䛸᥎ᐹ䛥䜜䜛䠊௨ୖ䛛䜙䠈䛣䛾ᆅᇦ䛷䛿䠈㻝㻣㻜㻟 ᖺඖ⚘ᆅ㟈䠈㻝㻥㻞㻟 ᖺ㛵ᮾᆅ㟈䛸䜒䠈ᆅ㟈ື䛜䛒䜎䜚ቑᖜ䛧䛺䛛䛳䛯䛣䛸䛜⪃䛘䜙䜜䜛䠊㻌୍᪉䠈㼇஧ᐑ⏫䠄㻝㻥㻥㻜䠅㼉䛻䛿䠈ᚤືほ Ⅼ㻔㻝㻢㻕䛾ᩜᆅෆ䛷ᐇ᪋䛥䜜䛯䝪䞊䝸䞁䜾䝕䞊䝍䜒ᥖ㍕䛥䜜䛶䛚䜚䠈䛭䜜䛻䜘䜛䛸䠈Ἶᒙ䜔⭉᳜≀ΰ䛨䜚䛾ᒙ䛜῝䛥⣙ 㻟㻝㼙䛾ᇶ┙ୖ䛻ሁ✚䛧䛶䛔䜛䛣䛸䛜䜟䛛䜛䠊䛩䛠㏆䛟䜢ᮾᾏ㐨᪂ᖿ⥺䛜㏻䛳䛶䛔䜛䛜䠈䛄ᮾᾏ㐨᪂ᖿ⥺ᕤ஦ㄅ䛅㼇᪥ᮏᅜ᭷㕲㐨䠄㻝㻥㻢㻡䠅㼉䛻䜘䜛䛸䠈஧ᐑ⏫୰㔛䛿㌾ᙅᆅ┙༊㛫䛸䛧䛶ྲྀ䜚ୖ䛢䜙䜜䛶䛚䜚䠈䝢䞊䝖䠈⢓ᅵ䜢୺せᅵᒙ䛸䛩䜛㌾ᙅᒙ䛜 㻟㻜㼙 ሁ✚䛧䛶䛔䜛䛣䛸䛜グ㏙䛥䜜䛶䛔䜛䠊ཧ⪃䜎䛷䛻䠈ᅗ 㻢 䛸䛧䛶ᚤືほ Ⅼ㻔㻝㻢㻕䛾 㻴㻛㼂 䝇䝨䜽䝖䝹ẚ䜢♧䛧䛶䛚䛟䠊ᚤືほ Ⅼ㻔㻡㻕䛸㻔㻝㻢㻕䛿䠈ྠ䛨஧ᐑ⏫ෆ䛻䛒䜛䛜䠈ᆅ┙ᵓ㐀䜒 㻴㻛㼂 䝇䝨䜽䝖䝹ẚ䜒኱䛝䛟␗䛺䛳䛶䛔䜛䠊㻌㻠㻚㻠㻌 ኱☾ᐟ䛸䛭䛾࿘㎶ᆅᇦ䛾ᆅ┙㻌ḟ䛻䠈኱☾ᐟ䛸䛭䛾࿘㎶ᆅᇦ䛾ᆅ┙䛻䛴䛔䛶䛾ㄪᰝ⤖ᯝ䜢ᅗ 㻣 䛻ᇶ䛵䛝ሗ࿌䛩䜛䠊ᚤືほ 䛿䠈ᑿୖ
ᮏ㝕㊧ᆅ䛾༡ᮾ⣙ 㻡㻜㼙 䛻䛒䜛኱☾⏫ᾘ㜵⨫䛾ᩜᆅ䛷ᐇ᪋䛧䛯䠊ᆅ┙䛾༟㉺᣺ືᩘ䛿 㻠㻚㻞㻡㻴㼦 䛸䛺䛳䛯䠊኱☾⏫ᙺሙ䛾ධ䜚ཱྀ௜㏆䛾䝪䞊䝸䞁䜾䝕䞊䝍䜢ཧ↷䛧䛯䛸䛣䜝䠈῝䛥 㻤㼙 䛷◳㉁䛾♟ᆅ┙䛾Ꮡᅾ䛜☜ㄆ䛷䛝䛯䠊䛄኱☾⏫ྐ䛅㼇኱☾⏫䠄㻝㻥㻥㻢䠅㼉䛻䛿䠈㻺 ್䛾グ㍕
䛿䛺䛔䜒䛾䛾䠈ከᩘ䛾䝪䞊䝸䞁䜾䝕䞊䝍䜔᥎ᐃᆅ㉁᩿㠃ᅗ䛜ᥖ㍕䛥䜜䛶䛔䜛䠊䛭䜜䛻䜘䜛䛸䠈ᮏ㝕㊧ᆅ䜔ᚤືほ Ⅼ㻔㻢㻕䛾䛒䛯䜚䛷䛿䠈῝䛥⣙ 㻣㼙 䛻จ⅊ᒾ䛾ᇶ┙䛜䛒䜚䠈䛭䛾ୖ䛻⾲ᅵ䠈◁ᆅ┙䛜ሁ✚䛧䛶䛔䜛䜒䛾䛸᥎ᐃ䛥䜜䛶䛔䜛䠊䜎䛯䠈ᚤືほ Ⅼ㻔㻤㻕䛾䛩䛠㏆䛟䛾䝪䞊䝸䞁䜾䝕䞊䝍䜢ཧ↷䛩䜛䛸䠈῝䛥ᆅ⾲䛛䜙῝䛥㻝㻞䡚㻝㻟㼙 䜎䛷ᴫ䛽䠈◁㉁ᆅ┙䛾ሁ✚䛜ぢ䜙䜜䠈䛭䛾ୗ䛻◁♟ᆅ┙䛜⌧䜜䜛䠊䛣䛾◁♟ᆅ┙䜢ᇶ┙䛸⪃䛘䜛䛸䠈ᚤືほ Ⅼ㻔㻤㻕䛷䛿༟㉺᣺ືᩘ䛜 㻠㻚㻜㻴㼦 䛺䛾䛷䠈- 44 -

ᅗ 9 ᆅ┙䛾ᚤືほ 䛾䜎䛸䜑䠄ᅜᅵᆅ⌮㝔䠈㟁Ꮚᅜᅵ Web 䜢౑⏝䠅䠊
Fig.9 Summary of microtremor measurements in the investigated area
(Web map operated by the Geospatial Information Authority of Japan was used).
㻝㻛㻠 Ἴ 㛗 ๎ 䜢 ⏝ 䛔 䛶 ᖹ ᆒ ⓗ 䛺 䛫 䜣 ᩿ Ἴ ㏿ ᗘ 䛿㻞㻜㻜㼙㻛㼟 ⛬ᗘ䛸ồ䜑䜙䜜䜛䠊㻌኱☾⏫䛾୰ᚰ㒊䛿䠈ᴫ䛽䠈Ⰻ㉁䛾ᆅ┙䛾䜘䛖䛷䛒䜛䛜䠈㛵ᮾᆅ㟈䛾㝿䠈ಽቯ䛧䛯኱☾ᑠᏛᰯ䛾䝪䞊䝸䞁䜾䝕䞊䝍䜢ཧ↷䛩䜛䛸䠈㻝㼙 ⛬ᗘ䛾⾲ᅵ䛾ୗ䠈῝䛥 㻤䡚㻥㼙 䜎䛷◁ᆅ┙䛜ሁ✚䛧䠈ᇶ┙䛻⮳䛳䛶䛔䜛䠊ᚤືほ 䛛䜙ᚓ䜙䜜䜛༟㉺᣺ືᩘ䛿⣙ 㻜㻚㻢㻴㼦 䛷௚䜘䜚䛛䛺䜚ᑠ䛥䛔್䛸䛺䛳䛶䛔䜛䜒䛾䛾䠈ᮏ㝕௜㏆䛷䛾ほ⤖ᯝ䛸ྠᵝ䠈㻴㻛㼂 䝇䝨䜽䝖䝹ẚ䛻᫂░䛺䝢䞊䜽䛿ぢ䜙䜜䛺䛔䠊ᒾ┙䜔◳㉁ᆅ┙䛷䛿䠈ᚤື䛾 㻴㻛㼂 䝇䝨䜽䝖䝹䛜ᖹᆠ䛺ᙧ≧䛸䛺䜛䛣䛸䛜ᣦ᦬䛥䜜䛶䛚䜚㼇⃝⏣䠄㻞㻜㻜㻤䠅㼉䠈㻴㻛㼂 䝇䝨䜽䝖䝹ẚ䛜᫂░䛺䝢䞊䜽䜢♧䛥䛺䛔኱☾⏫୰ᚰ㒊䛿䛣䛾ሙྜ䛻┦ᙜ䛩䜛䛣䛸䛜⪃䛘䜙䜜䜛䠊⊃䛔⠊ᅖ䛷ᇶ┙῝䛥䛜኱䛝䛟ኚ໬䛧䛶䛔䜛䜶䝸䜰䜒䛒䜛䛜䠈ᐟሙ䛜䛒䛳䛯ᕷ⾤ᆅ䛿ᴫ䛽Ⰻዲ䛺ᆅ┙䛷䛒䜚䠈๓㏙䛾䜘䛖䛻䠈㛵ᮾᆅ㟈䛾㝿䛾඲༙ቯᡞᩘ䛾๭ྜ䛜 㻞㻢㻑䛸ᅜᗓᮧ䜔ᖹሯ⏫䜘䜚ᑡ䛺䛔୍ᅉ䛸⪃䛘䜙䜜䜛䠊䛭䛾୍᪉䛷䠈◚ᦆᡞᩘ䛿ከ䛟↓യ䛷ṧ䛳䛯ᐙ䛿୍ᡞ䜒䛺䛧䠈䛸䛄኱☾⏫ྐ䛅㼇኱☾⏫䠄㻞㻜㻜㻤䠅㼉䛻ሗ࿌䛥䜜䛶䛚䜚䠈ᆅ┙䛾ᛶ㉁䛜ᦂ䜜䜢䛒䜛⛬ᗘᢚ䛘䜛䜒䛾䛾䠈ᘓ≀⿕ᐖ䛜ⓙ↓䛻䛺䜛䜋䛹䛷䛿䛺䛛䛳䛯䛸⪃䛘䜙䜜䜛䠊㻌㻠㻚㻡㻌 ᑠ⏣ཎᐟ䛸䛭䛾࿘㎶ᆅᇦ䛾ᐟ䛸䛭䛾⿕ᐖ㻌ᑠ⏣ཎᐟ䛿⌧ᅾ䛾ᅜ㐨䠍ྕ䜘䜚༡ഃ䛾㏻䜚䛻䛺䛳䛶䛔䜛䠊ྂΎỈ⬥ᮏ㝕㊧ᆅ䛜⌧ᅾ䠈᫂἞ኳⓚᐑ䝜๓⾜ᅾᡤ㊧䛸䛧䛶ᑠ⏣ཎᕷᣦᐃྐ㊧䛻䛺䛳䛶䛚䜚䠈ᑠ⏣ཎᕷ䛾チྍ䜢ᚓ䛶ᚤືほ 䜢ᐇ᪋䛧䛯䠊ΎỈ㔠ᕥ⾨㛛ᮏ㝕䛿䠈ᑠ⏣ཎᐟ䛻䛒䛳䛯ᅄ㌺䛾ᮏ㝕䛾䛖䛱䛾➹㢌䛷䠈ΎỈ㔠ᕥ⾨㛛ᐙ䛿Ụᡞ᫬௦䛻⏫ᖺᐤ䜒໅䜑䠈ᐟሙ⏫඲య䛾ᤸᥱ䜒⾜䛳䛶䛔䛯㼇ᑠ⏣ཎᕷᩍ⫱ጤဨ఍䠄㻝㻥㻡㻣䠅㼉䠊ᆅ┙䛾༟㉺᣺ືᩘ䛿䠈㻜㻚㻣㻤㻴㼦 䛸䛺䛳䛯䠊䛭䛾すഃ⣙ 㻠㻜㻜㻙㻡㻜㻜㼙 䛻఩⨨䛩䜛୕䛾୸ᑠᏛᰯᩜᆅ䛷䛾ㄪᰝ⤖ᯝ䜒ྠ⛬ᗘ䠄㻜㻚㻣㻟㻴㼦䠅䛸䛺䛳䛯䠊㻌㓇ໝᕝୗὶᇦ䛻఩⨨䛩䜛䛣䛾䜶䝸䜰䛿䠈㊊᯶ᖹ㔝䛾୰䛷䜒Ἀ✚ᒙ䛜ཌ䛔䜶䝸䜰䛸⪃䛘䜙䜜䜛䠊䛭䛾䛯䜑䠈䛣䛾ᆅᇦ䛷ほ 䛧䛯⤖ᯝ䠈ᆅ┙䛾༟㉺᣺ືᩘ䛿䛔䛪䜜䜒 㻞㻴㼦 ௨ୗ䛸䛺䜚䠈䛄㐨㊰ᶫ♧᪉᭩䛅䛾ᇶ‽䛷䛔䛖䛸䠈䛔䛪䜜䜒䊢✀ᆅ┙䛸䛺䛳䛯䠊㻌㻠㻚㻢㻌 ᚤືほ ⤖ᯝ䛾䜎䛸䜑㻌௨ୖ䠈ᮏ◊✲䛷኱☾ᐟ䛛䜙ᑠ⏣ཎᐟ䛻䛛䛡䛶䛾㻝㻥 Ⅼ䛷ᐇ᪋䛧䛯ᚤືほ ⤖ᯝ䜢䜎䛸䜑䜛䠊ᩘ್䛿ᆅ┙䛾༟㉺᣺ືᩘ䠄㻴㼦䠅䛷䛒䜛䠊ᩘ್䛾⨶ิ䛰䛡䛷䛿䜟䛛䜚䛻䛟䛔䛾䛷䠈ཧ⪃䛸䛧䛶䠈䛄㐨㊰ᶫ♧᪉᭩䛅䛷⏝䛔䜙䜜䜛ศ㢮䛻ᚑ䛔䠈䊠䡚䊢✀ᆅ┙䠄ὀ䠖୍⯡䛻䊢✀䛜᭱䜒㌾ᙅ䛺ᆅ┙䛷䛒䜛䠅䛻ศ㢮䛧䠈࿘ᮇ 㻜㻚㻞 ⛊ᮍ‶䜢䊠✀䠄䚽༳䠅䠈㻜㻚㻞 ⛊௨ୖ 㻜㻚㻢 ⛊ᮍ‶䜢䊡✀䠄䖂༳䠅䠈㻜㻚㻢 ⛊௨ୖ䜢䊢✀䠄䖃༳䠅䛷⾲♧䛩䜛䠊䜒䛱䜝䜣䠈䛣䛾ศ㢮䛿⌧ᅾ䛾ᵓ㐀≀䛾⪏㟈タィୖ䛾ᆅ┙ศ㢮䛺䛾䛷䠈ᙜ᫬䛾ᵓ㐀≀䛻䛴䛔䛶㐺ᙜ䛛䛹䛖䛛䛿᳨ウ䛾వᆅ䛜䛒䜛䛜䠈䠍䛴䛾ཧ↷ศ㢮䛸䛧䛶♧䛧䛯䠊㻌- 45 -

ᅜᗓὠ㥐䜘䜚す䛾ᑠ⏣ཎ䜶䝸䜰䛿䛩䜉䛶䊢✀ᆅ┙䛸䛺䛳䛶䛔䜛䛣䛸䛜䜟䛛䜛䠊஧ᐑ䜶䝸䜰䛷䛿䠈ᒁᡤⓗ䛻䊢✀ᆅ┙䛸䛺䛳䛶䛔䜛䛸䛣䜝䜒䛒䜛䛜䠈ᱵἑ䜶䝸䜰䛿䊠✀䜎䛯䛿䊡✀䛻䛺䛳䛶䛔䜛䠊኱☾䜶䝸䜰䛿䠈䊡✀ᆅ┙䛜ከ䛔䛜ᒁᡤⓗ䛻䊢✀ᆅ┙䛜ぢ䜙䜜䜛䠊㻌㼲㻡㻚㻌 䜎䛸䜑㻌㻝㻣㻜㻟 ᖺඖ⚘ᆅ㟈䛾㝿䠈ᡞሯᐟ䛛䜙ᑠ⏣ཎᐟ䛻䛛䛡䛶඲⁛䛧䛯୰䛻䛒䛳䛶䠈ᱵ⃝䛾ᐟ䛷䛿⿕ᐖ䛜ⓙ↓䛷䛒䛳䛯䛣䛸䛻╔┠䛧䠈䛭䛾ᆅ┙ⓗ䛺せᅉ䜢᥈䛳䛯䠊ᮏㄽᩥ䛷䛿䠈≉䛻䠈኱☾䛛䜙ᑠ⏣ཎ䛻䛛䛡䛶䛾䜶䝸䜰䛻᳨ウᑐ㇟䜢⤠䜚䠈බ㛤䛥䜜䛶䛔䜛ᆅ┙䛾䝪䞊䝸䞁䜾䝕䞊䝍䜔ᖖ᫬ᚤືほ 䜢⏝䛔䛯ᆅ┙ㄪᰝ䛻ᇶ䛵䛝䠈䛭䛾せᅉ䜢᳨ウ䛧䛯䠊䛭䛾⤖ᯝ䠈௨ୗ䛾⤖ㄽ䜢ᚓ䛯䠊㻌㻔㻝㻕 ኱☾ᐟ䠈ᱵ⃝䛾ᐟ䠈ᑠ⏣ཎᐟ䛾 㻟 䛴䛾ᐟሙ䛷䛿䠈ᆅ┙䛾≉ᛶ䛜኱䛝䛟␗䛺䜛䠊㻌㻔㻞㻕 ᱵ⃝䛾ᐟ䛜䛒䛳䛯䜶䝸䜰䛿Ἀ✚ᒙᇶᗏ㠃῝ᗘ䛜ὸ䛟䠈䛭䛾ୖ䛻⥾䜎䛳䛯◁䛜ሁ✚䛧䛶Ἀ✚ᆅ┙䜢ᙧᡂ䛧䛶䛔䜛䜒䛾䛸⪃䛘䜙䜜䜛䠊䛭䛾䛯䜑䠈ᆅ㟈ື䛾ቑᖜ䛜䛥䜋䛹኱䛝䛟䛺䜙䛪䠈㻝㻣㻜㻟 ᖺඖ⚘ᆅ㟈䠈㻝㻥㻞㻟 ᖺ㛵ᮾᆅ㟈䛸䜒䠈⿕ᐖ䛜ᑠ䛥䛟䛺䛳䛯䜒䛾䛸⪃䛘䜙䜜䜛䠊㻌㻔㻟㻕 ᑠ⏣ཎᐟ䛾䛒䜛㊊᯶ᖹ㔝䜶䝸䜰䛿䠈ᅜᗓὠ㥐௨す䛷䛔䛪䜜䜒༟㉺᣺ືᩘ䛜 㻝㻚㻡㻴㼦 ௨ୗ䠈࿘ᮇ㻜㻚㻢 ⛊௨ୖ䛸䛺䜚䠈㐨㊰ᶫ♧᪉᭩䛾ศ㢮䛷䛔䛖䊢✀ᆅ┙䠄㌾ᙅᆅ┙䠅䛸䛺䛳䛯䠊䛣䜜䛿䠈㓇ໝᕝἙཱྀ㒊䛻ᙧᡂ䛥䜜䛯Ἀ✚ᖹ㔝䛷䠈◁ᆅ┙䛜⦆䛟ሁ✚䛧䛯䛯䜑䛸ᛮ䜟䜜䜛䠊䛭䛾䛯䜑䠈ᆅ┙䛾ᦂ䜜䛜኱䛝䛟䛺䛳䛯䜒䛾䛸⪃䛘䜙䜜䜛䠊㻌௒ᚋ䠈䛥䜙䛻ᚤືほ ᆅⅬ䜢ቑ䜔䛧䛶䠈ヲ⣽䛺᳨ウ䜢ຍ䛘䛶䛔䛟ணᐃ䛷䛒䜛䠊㻌ㅰ㎡㻌஧ᐑ⏫ᩍ⫱ጤဨ఍䛾୰ᒣྐዉᏊᵝ䠈Ⲕᒇᆅ༊๪
఍㛗䛾ఀ⸨䜅䛨䛚ᵝ䛻䛿ᖖ᫬ᚤືㄪᰝ䜢⾜䛖䛻䛒䛯䜚䠈ᵝ䚻䛺౽ᐅ䜢ᅗ䛳䛶㡬䛝䜎䛧䛯䠊䜎䛯஧ᐑ⏫䛾࿴⏣⩏๎ᵝ䛻䛿Ⲕᒇᮏ㝕ᯇᒇ㊧ᆅ䛷䛾ᖖ᫬ᚤືほ䜢チྍ䛧䛶㡬䛝䜎䛧䛯䠊኱☾ᐟ㊧ᆅ࿘㎶ᆅᇦ䛺䛹䠈኱☾ᆅ༊䛷䛾ᚤືほ 䛻䛚䛔䛶䛿䠈ඖ኱☾⏫㒓ᅵ㈨ᩱ㤋㤋㛗䛾㕥ᮌ୍⏨ᵝ䛻⌧ᆅ䜢䛤᱌ෆ㡬䛟䛺䛹䠈ከ኱䛺䛤ຓຊ䜢㡬䛝䜎䛧䛯䠊ᑠ⏣ཎᕷ䛷䛾ᚤືほ 䛻䛚䛔䛶䛿䠈ᑠ⏣ཎಖ೺⚟♴஦ົᡤ䛾▼ᕝ㐩ஓᵝ䛻䛤ຓຊ㡬䛝䜎䛧䛯䠊䛣䜜䜙䛾ㄪᰝᆅᇦ䛾ᑠᏛᰯ䜔୰Ꮫᰯ䠈㧗➼Ꮫᰯ䠈ᾘ㜵⨫➼䜘䜚ほ ሙᡤ䜢ᥦ౪䛧䛶㡬䛝䜎䛧䛯䠊⏘ᴗᢏ⾡⥲ྜ◊✲ᡤ䛾ᑠᯇཎ⌶Ặ䜘䜚ᆅ㉁Ꮫⓗ䛺䛤ຓゝ䜢㡬䛝䜎䛧䛯䠊᭱ᚋ䛻䛺䜚䜎䛧䛯䛜䠈ᰝㄞ⪅䛾ᇼᕝᬕኸẶ䠄⏘ᴗᢏ⾡⥲ྜ◊✲ᡤ䠅䠈⦅㞟ᢸᙜ䛾ຍ⣡㟹அẶ䠄ᮾி኱Ꮫᆅ㟈◊✲ᡤ䠅䠈⦅㞟ฟ∧ጤဨ఍䛾⾜㇂భ୍ጤဨ㛗䠄⏘ᴗᢏ⾡⥲ྜ◊✲ᡤ䠅䜘䜚䠈ㄽᩥ䜢ᨵၿ䛩䜛ୖ䛷኱ኚ㈗㔜䛺䛤ពぢ䜢㡬ᡝ䛧䜎䛧䛯䛣䛸䛻ឤㅰ⮴䛧䜎䛩䠊䛺䛚ᮏ◊✲䛿䠈ᮾᾏ኱Ꮫ㐃ྜᚋ᥼఍◊✲ຓᡂ䜢ཷ䛡䛶ᐇ᪋䛧䜎䛧䛯䠊௨ୖ䠈グ䛧䛶䠈㛵ಀ䛾ⓙᵝ䛻ឤㅰ⮴䛧䜎䛩䠊㻌ᑐ㇟ᆅ㟈䠖㻝㻣㻜㻟 ᖺඖ⚘ᆅ㟈䠈㻝㻥㻞㻟 ᖺ㛵ᮾᆅ㟈㻌ᩥ㻌 ⊩㻌஬⾤㐨䜴䜷䞊䜽䞉ඵᮌ∾ኵ䠈䛱䜓䜣䛸Ṍ䛡䜛ᮾᾏ㐨஬༑୕ḟ䠈ᮾ䠈Ụᡞ᪥ᮏᶫ䡚ぢ௜ᐟ䠇ጲ⾤㐨䠈㻞㻜㻝㻥䠈ᒣ䛸῱㇂♫䠊㻌ᅵ ᮌ ◊ ✲ ᡤ 䠈 㻞㻜㻜㻤 䠈 ᅜ ᅵ ᆅ ┙ ᝟ ሗ ᳨ ⣴ 䝃 䜲 䝖㻷㼡㼚㼕㻶㼕㼎㼍㼚䠈㼔㼠㼠㼜㻦㻛㻛㼣㼣㼣㻚㼗㼡㼚㼕㼖㼕㼎㼍㼚㻚㼜㼣㼞㼕㻚㼓㼛㻚㼖㼜㻛㼖㼜㻛㻌⚄ዉᕝ┴䠈㻝㻥㻣㻝䠈⚄ዉᕝ┴ᆅ┙ᆅ㉁ᅗ䠈⚄ዉᕝ┴ᆅ┙ᆅ㉁ㄪᰝሗ࿌᭩௜ᅗ䠊㻌⚄ዉᕝ┴䠈㻝㻥㻤㻡䠈ᅵᆅศ㢮ᇶᮏㄪᰝ䠈ᑠ⏣ཎ䞉⇕ᾏ䞉ᚚẊሙ䠊㻌⚄ዉᕝ┴䠈㻝㻥㻤㻢䠈ᅵᆅศ㢮ᇶᮏㄪᰝ䠈ᑠ⏣ཎ䞉⇕ᾏ䞉ᚚẊሙ䠊㻌⚄ዉᕝ┴㒔ᕷᩚഛᢏ⾡䝉䞁䝍䞊䠈䛛䛺䛜䜟ᆅ㉁᝟ሗ
㻹㻭㻼䠈㼔㼠㼠㼜㻦㻛㻛㼣㼣㼣㻚㼗㼍㼚㼍㼓㼍㼣㼍㻙㼎㼛㼞㼕㼚㼓㻚㼖㼜㻛㻌໭ཎ⣒Ꮚ䠈㻞㻜㻝㻟䠈㻝㻣㻜㻟 ඖ⚘ᆅ㟈ሗ࿌᭩䠈➨ 㻢 ❶┦ᶍ‴ἢᓊ㒊䛾⿕ᐖ䠈ෆ㛶ᗓ䠊㻌
ᅜᅵ஺㏻┬௚䠈ᅜᅵᆅ┙᝟ሗ᳨⣴䝃䜲䝖䠈㻷㼡㼚㼕㻶㼕㼎㼍㼚䠈㼔㼠㼠㼜㻦㻛㻛㼣㼣㼣㻚㼗㼡㼚㼕㼖㼕㼎㼍㼚㻚㼜㼣㼞㼕㻚㼓㼛㻚㼖㼜㻛㼖㼜㻛㼕㼚㼐㼑㼤㻚㼔㼠㼙㼘㻌ᩥ㒊┬㟈⅏㇧㜵ホ㆟᭳⦅㻘㻌㻝㻥㻣㻡㻘㻌 ቑゞ㻌 ኱᪥ᮏᆅ㟈ྐᩱ㻌 ➨஧ᕳ䠈㬆㬅♫䠊㻌 㻌ෆ㛶ᗓ䠈㻞㻜㻝㻡䠈ᑠ➟ཎㅖᓥす᪉Ἀ䜢㟈※䛸䛩䜛ᆅ㟈䛻䜘䜛⿕ᐖ≧ἣ䛻䛴䛔䛶䠈ෆ㛶ᗓ㜵⅏᝟ሗ䛾䝨䞊䝆䠈㼔㼠㼠㼜㻦㻛㻛㼣㼣㼣㻚㼎㼛㼡㼟㼍㼕㻚㼓㼛㻚㼖㼜㻛㼡㼜㼐㼍㼠㼑㼟㻛㼔㻞㻣㻜㻢㻜㻝㼖㼕㼟㼔㼕㼚㻛㼜㼐㼒㻛㼔㻞㻣㻜㻢㻜㻞㼖㼕㼟㼔㼕㼚㼋㻜㻝㻚㼜㼐㼒㻌ෆົ┬♫఍ᒁ䠈㻝㻥㻞㻢䠈኱ṇ㟈⅏ᚿ䠄᚟้∧㻌 㛵ᮾ኱㟈⅏ㄅ䞉⚄ዉᕝ⦅䠈㻝㻥㻤㻤䠈༓⛅♫Ⓨ⾜䠅㻌᪥ᮏ㐨㊰༠఍䠈㻞㻜㻝㻣䠈㐨㊰ᶫ♧᪉᭩䞉ྠゎㄝ䠈䊤⪏㟈タィ⦅䠈୸ၿฟ∧䠊㻌᪥ᮏᅜ᭷㕲㐨䠈㻝㻥㻢㻡䠈ᮾᾏ㐨᪂ᖿ⥺ᕤ஦ㄅ㻌 ᅵᮌ⦅䠈᪥ᮏ㕲㐨᪋タ༠఍䠊㻌஧ᐑ⏫䠈㻝㻥㻥㻜䠈஧ᐑ⏫ྐ㻌 ㈨ᩱ⦅ 㻝㻌 ⮬↛䠈஧ᐑ⏫䠊㻌஧ᐑ⏫䠈㻝㻥㻥㻠䠈஧ᐑ⏫ྐ㻌 ㏻ྐ⦅䠈஧ᐑ⏫䠊㻌- 46 -

஧ᐑ⏫ᩍ⫱ጤဨ఍䠈㻝㻥㻣㻞䠈஧ᐑ⏫㒓ᅵㄅ䠈஧ᐑ⏫ᩍ⫱ጤဨ఍䠊㻌
ᑠ⏣ཎᕷ䠈㻞㻜㻜㻝䠈ᑠ⏣ཎᕷྐ䠈㏻ྐ⦅䠈㏆⌧௦䠈ᑠ⏣ཎᕷ䠊㻌ᑠ⏣ཎᕷᩍ⫱ጤဨ఍䠈㻝㻥㻡㻣 ᣦᐃ䠈ᑠ⏣ཎᕷᣦᐃྐ
㊧ 㻌 ᫂ ἞ ኳ ⓚ ᐑ 䝜 ๓ ⾜ ᅾ ᡤ ㊧ 䠈㼔㼠㼠㼜㻦㻛㻛㼣㼣㼣㻚㼏㼕㼠㼥㻚㼛㼐㼍㼣㼍㼞㼍㻚㼗㼍㼚㼍㼓㼍㼣㼍㻚㼖㼜㻛㼒㼕㼑㼘㼐㻛㼘㼕㼒㼑㼘㼛㼚㼓㻛㼜㼞㼛㼜㼑㼞㼠㼥㻛㼏㼡㼘㼠㼡㼞㼍㼘㻛㼔㼕㼟㼠㼛㼞㼕㼏㻛㼟㻙㼙㼕㼥㼍㼚㼛㼙㼍㼑㻚㼔㼠㼙㼘㻌኱☾⏫䠈㻝㻥㻥㻢䠈኱☾⏫ྐ㻌 㻥㻌 ู⦅㻌 ⮬↛䠈኱☾⏫䠊㻌኱☾⏫䠈㻞㻜㻜㻤䠈኱☾⏫ྐ 㻣㻌 ㏻ྐ⦅㻌 ㏆⌧௦䠈኱☾⏫䠊㻌኱ᓮ㡰ᙪ䠈㻝㻥㻤㻟䠈ᆅ㟈䛸ᘓ⠏䠈ᒾἼ᪂᭩䠈㻞㻜㻜㼜㼜䠊⃝⏣⩏༤䠈㻞㻜㻜㻤䠈ᚤື 㻴㻛㼂 䝇䝨䜽䝖䝹ẚ䛾≉ᛶ䛸䛣䜜䜢⏝䛔䛯ᆅ㟈ቑᖜ≉ᛶ䛾⡆᫆᥎ᐃἲ䠈≀⌮᥈ᰝ䠈➨ 㻢㻝 ᕳ䠈➨ 㻢 ྕ䠈㼜㼜㻚㻡㻝㻝㻙㻡㻞㻞䠊㻌- 47 -