㧠㧙㧞 㑐᧲࡮᧲ᶏ࿾ၞߦ߅ߌࠆᦨㄭߩ࿾㔡ᵴേ㧔2008 ᐕ 11 ᦬㨪2009 ᐕ 4 ᦬㧕Recent Seismic Activities in the Kanto-Tokai Area (November, 2008 – April, 2009)㒐ἴ⑼ቇᛛⴚ⎇ⓥᚲ
National Research Institute for Earth Science and Disaster Prevention㒐ἴ⑼ቇᛛⴚ⎇ⓥᚲ࡮㜞ᗵᐲ࿾㔡᷹ⷰ✂㧔Hi-net㧕ߦၮߠߊ㑐᧲࡮᧲ᶏ෸߮ߘߩ๟ㄝ࿾ၞߩ᦬೎㔡ḮಽᏓ࿑ࠍ╙ 1 ࿑߆ࠄ╙ 6 ࿑ߦ␜ߔ㧚ߎߩ㑆ߩᵈ⋡ߔߴ߈࿾㔡ᵴേߪએਅߩㅢࠅߢ޽ࠆ㧚٤⑔ፉ⋵ᴒߢᄥᐔᵗࡊ࡟࡯࠻਄㕙ߦ߅ߌࠆૐⷺㅒᢿጀဳߩ࿾㔡(M4.0 એ਄)߇એਅߩㅢࠅ᷹ⷰߐࠇ
ߚ㧚
09/01/03 16:13 37.075N 141.155E H= 50km M5.1
09/01/05 10:36 36.988N 141.789E H= 41km M5.0
09/01/07 06:45 36.989N 141.528E H= 49km M4.0
09/02/11 19:07 37.104N 141.105E H= 51km M4.2
٤਄⸥ߩઁ㧘⑔ፉ⋵ߣߘߩᴒߢએਅߩ࿾㔡(M4.0 એ਄)߇᷹ⷰߐࠇߚ㧚09/03/24 04:54 37.245N 141.850E H= 29km M4.2 ࠳࠙ࡦ࠺ࠖ࠶ࡊࠛࠢࠬ࠹ࡦ࡚ࠪࡦ٤⨙ၔ⋵ᴒߢᄥᐔᵗࡊ࡟࡯࠻਄㕙ߦ߅ߌࠆૐⷺㅒᢿጀဳߩ࿾㔡(M4.0 એ਄) ߇એਅߩㅢࠅ᷹ⷰߐࠇߚ㧚
08/12/14 19:26 36.393N 141.077E H= 43km M5.0
09/02/01 06:52 36.724N 141.275E H= 47km M6.21㧕
09/02/28 02:30 36.452N 140.612E H= 56km M4.2
09/03/04 19:05 35.901N 140.899E H= 38km M4.3
09/04/28 06:38 36.416N 141.158E H= 42km M5.4٤਄⸥ߩઁ㧘⨙ၔ⋵ᴒߢએਅߩ࿾㔡(M4.0 એ਄)߇᷹ⷰߐࠇߚ㧚09/02/26 05:53 36.407N 141.026E H= 42km M4.1٤⨙ၔ⋵ർㇱ᧲ᣇߪࠆ߆ᴒߢ⊒↢ߒߚਥߥ࿾㔡(M4.0 એ਄)ߪએਅߩㅢࠅߢ޽ࠆ㧚޿ߕࠇ߽㧘ᄥᐔᵗࡊ࡟࡯࠻਄㕙ߦ߅ߌࠆૐⷺㅒᢿጀဳߢ޽ߞߚ㧚
08/11/02 06:46 36.630N 141.574E H= 48km M4.1
08/12/07 06:03 36.736N 141.306E H= 47km M4.008/12/07 08:29 36.690N 141.398E H= 46km M4.308/12/20 23:51 36.254N 141.452E H= 43km M4.6٤⨙ၔ⋵ධㇱ᧲ᣇߪࠆ߆ᴒߢ⊒↢ߒߚਥߥ࿾㔡(M4.0 એ਄) ߪએਅߩㅢࠅߢ޽ࠆ㧚޿ߕࠇ߽㧘ᄥᐔᵗࡊ࡟࡯࠻਄㕙ߦ߅ߌࠆૐⷺㅒᢿጀဳߢ޽ߞߚ㧚
08/11/20 04:26 36.061N 141.732E H= 15km M4.908/11/20 20:58 36.060N 141.551E H= 22km M4.308/11/25 08:00 35.903N 141.480E H= 40km M4.409/04/08 13:29 36.190N 141.806E H= 25km M4.1
09/04/21 07:54 35.910N 140.888E H= 40km M4.8٤⨙ၔ⋵ධ⷏ㇱߢࡈࠖ࡝ࡇࡦᶏࡊ࡟࡯࠻਄㕙Ⴚ⇇ߦ߅ߌࠆർ⷏ධ᧲࿶❗ߩૐⷺㅒᢿጀဳߩએਅߩ࿾
㔡(M4.0 એ਄)߇᷹ⷰߐࠇߚ㧚
09/02/20 18:17 35.997N 140.093E H= 63km M4.4
09/03/25 15:26 36.021N 139.942E H= 40km M4.0٤⟲㚍⋵ߢએਅߩ࿾㔡(M4.0 એ਄)߇᷹ⷰߐࠇߚ㧚03/28 01:23 36.370N 139.329E H=134km M4.5 ධർ࿶❗ߩᮮߕࠇࠍ฽߻ㅒᢿጀ
ᄥᐔᵗࡊ࡟࡯࠻ౝㇱ- 139 -٤ᩔᧁ⋵ߢએਅߩ࿾㔡(M4.0 એ਄)߇᷹ⷰߐࠇߚ㧚
08/12/09 06:17 36.721N 139.930E H=111km M4.0 ࠳࠙ࡦ࠺ࠖ࠶ࡊࠦࡦࡊ࡟࠶࡚ࠪࡦ
09/01/26 17:54 36.466N 139.584E H=137km M4.9 ർ᧲ධ⷏࿶❗ߩᮮߕࠇᢿጀ
ᄥᐔᵗࡊ࡟࡯࠻ੑ㊀㕙ߩਅ㕙٤ᣣశ࡮⿷የ࿾ၞߩ⟲⊒ᵴേၞߢฦ᦬ߦ᷹ⷰߐࠇߚ࿾㔡ᢙ෸߮ᦨᄢ࿾㔡ߩ M ߪએਅߩㅢࠅߢ޽ࠆ㧚
11 ᦬ 61 ୘ M1.6
12 ᦬ 182 ୘ M2.9
1 ᦬ 96 ୘ M1.8
2 ᦬ 121 ୘ M2.6
3 ᦬ 235 ୘ M2.1
4 ᦬ 94 ୘ M2.2
٤ ㌑ሶᴒߢએਅߩ࿾㔡(M4.0 એ਄)߇᷹ⷰߐࠇߚ㧚޿ߕࠇ߽㧘ᄥᐔᵗࡊ࡟࡯࠻਄㕙ߦ߅ߌࠆૐⷺㅒᢿጀဳߢ޽ߞߚ㧚
08/12/31 00:49 35.535N 140.968E H= 44km M4.8
09/01/29 08:56 35.644N 140.654E H= 45km M4.5
09/04/14 01:59 35.646N 140.722E H= 45km M4.4
٤ᚱ✚ඨፉਛㇱߢએਅߩ࿾㔡(M4.0 એ਄)߇᷹ⷰߐࠇߚ㧚09/02/01 14:44 35.406N 140.080E H= 64km M4.0 ᧲⷏િᒛߩᱜᢿጀ
ᄥᐔᵗࡊ࡟࡯࠻ੑ㊀㕙ߩ਄㕙
09/02/17 04:54 35.275N 140.214E H= 29km M4.3 ർ⷏ධ᧲િᒛߩᱜᢿጀ 2㧕ࡈࠖ࡝ࡇࡦᶏࡊ࡟࡯࠻ੑ㊀㕙ߩ਄㕙٤ᚱ✚ඨፉධㇱߢએਅߩ࿾㔡(M4.0 એ਄)߇᷹ⷰߐࠇߚ㧚
09/03/13 21:22 35.160N 139.808E H= 86km M4.3 ⷏ർ⷏᧲ධ᧲࿶❗ߩㅒᢿጀᄥᐔᵗࡊ࡟࡯࠻ੑ㊀㕙ߩ਄㕙٤ᚱ✚ඨፉߩᴒว޿ߢએਅߩ࿾㔡(M4.0 એ਄)߇᷹ⷰߐࠇߚ㧚08/11/01 15:23 34.346N 140.395E H= 53km M4.3 ⷏ർ⷏᧲ධ᧲࿶❗ߩᮮߕࠇᢿጀ
ᄥᐔᵗࡊ࡟࡯࠻ੑ㊀㕙ߩ਄㕙
09/01/05 20:47 34.077N 141.479E H= 31km M4.2 ධർિᒛߩૐⷺᱜᢿጀ
ࡈࠖ࡝ࡇࡦᶏࡊ࡟࡯࠻ౝ
09/01/05 22:07 33.755N 141.219E H= 53km M4.6 ᧲⷏࿶❗ߩᮮߕࠇᢿጀ
09/04/03 01:46 34.827N 140.411E H= 78km M4.1 ᧲⷏࿶❗ߩㅒᢿጀᄥᐔᵗࡊ࡟࡯࠻਄㕙Ⴚ⇇٤㕒ጟ⋵દ⼺ඨፉ᧲ᣇᴒߩ⟲⊒࿾ၞߢฦ᦬ߦ᷹ⷰߐࠇߚ࿾㔡ᢙ෸߮ᦨᄢ࿾㔡ߩ M ߪએਅߩㅢࠅߢ޽ࠆ㧚
11 ᦬ 15 ୘ M1.4
12 ᦬ 28 ୘ M1.3
1 ᦬ 19 ୘ M1.6
2 ᦬ 18 ୘ M1.5
3 ᦬ 25 ୘ M2.0
4 ᦬ 29 ୘ M2.0٤ਃቛፉ࡮ᣂፉ࡮␹ᵤፉઃㄭߩ⟲⊒ᵴേၞߢએਅߩ࿾㔡߇᷹ⷰߐࠇߚ㧚ߎߩ⟲⊒࿾㔡ၞߢฦ᦬ߦ᷹ⷰߐࠇߚ࿾㔡ᢙ߅ࠃ߮ᦨᄢ࿾㔡ߩ M ߪએਅߩㅢࠅߢ޽ࠆ㧚
11 ᦬ 17 ୘ M2.7
12 ᦬ 20 ୘ M2.9
1 ᦬ 14 ୘ M2.4
2 ᦬ 13 ୘ M2.63 ᦬ 14 ୘ M2.54 ᦬ 18 ୘ M2.7
٤ਃቛፉㄭᶏߢએਅߩ࿾㔡(M4.0 એ਄)߇᷹ⷰߐࠇߚ㧚
09/01/22 21:21 34.309N 139.489E H=143km M5.1 ࠳࠙ࡦ࠺ࠖ࠶ࡊࠦࡦࡊ࡟࠶࡚ࠪࡦ
٤ጘ㒂⋵ߢએਅߩ࿾㔡(M4.0 એ਄)߇᷹ⷰߐࠇߚ㧚
08/11/24 06:16 35.291N 137.467E H= 13km M4.0 ᧲⷏࿶❗ߩㅒᢿጀ٤ጘ㒂࡮ṑ⾐࡮⑔੗⋵Ⴚઃㄭߢએਅߩ࿾㔡(M4.0 એ਄)߇᷹ⷰߐࠇߚ㧚- 140 -

09/02/18 06:47 35.664N 136.313E H= 9km M5.4 ⷏ർ⷏᧲ධ᧲࿶❗ߩᮮߕࠇᢿጀ
٤㐳㊁⋵⷏ㇱߩ⟲⊒࿾㔡ၞߢฦ᦬ߦ᷹ⷰߐࠇߚ࿾㔡ᢙ߅ࠃ߮ᦨᄢ࿾㔡ߩ M ߪએਅߩㅢࠅߢ޽ࠆ㧚
11 ᦬ 178 ୘ M2.9
12 ᦬ 153 ୘ M2.2
1 ᦬ 124 ୘ M1.6
2 ᦬ 140 ୘ M2.5
3 ᦬ 136 ୘ M2.0
4 ᦬ 103 ୘ M2.1
٤ਛㇱ࿾ᣇߦ߅޿ߡ㧘એਅߩᷓ⊒࿾㔡(M4.0 એ਄)߇⊒↢ߒߚ㧚࡮᧲ᶏᴒ08/12/09 22:32 34.825N 136.982E H=324km M4.608/12/14 23:01 33.993N 136.732E H=380km M4.309/02/02 04:43 34.437N 137.519E H=326km M4.309/02/10 05:38 33.951N 137.276E H=360km M4.009/02/14 06:57 33.891N 136.970E H=385km M4.009/02/21 11:14 34.366N 135.972E H=388km M4.409/03/04 15:59 33.703N 137.056E H=399km M4.009/03/17 04:31 34.558N 138.151E H=275km M4.309/03/27 11:15 33.701N 137.363E H=395km M4.009/03/29 04:46 33.796N 137.880E H=342km M4.309/04/01 06:39 34.105N 136.876E H=374km M4.009/04/04 15:01 33.992N 136.549E H=385km M4.309/04/07 06:28 33.809N 136.585E H=389km M4.809/04/18 23:54 33.853N 137.289E H=367km M4.609/04/19 08:37 34.421N 137.476E H=314km M4.309/04/27 08:27 34.427N 136.559E H=383km M4.009/04/30 17:51 34.139N 136.927E H=361km M4.5࡮ർ㒽࿾ᣇ 08/11/18 09:01 36.153N 137.535E H=253km M4.4 ࠳࠙ࡦ࠺ࠖ࠶ࡊࠛࠢࠬ࠹ࡦ࡚ࠪࡦ08/12/31 22:54 37.014N 137.573E H=260km M4.8 ർ⷏ධ᧲࿶❗ߩᮮߕࠇࠍ฽߻ㅒᢿጀ
09/03/03 09:16 36.258N 137.101E H=273km M4.0
09/03/12 22:51 36.311N 137.221E H=273km M4.2
09/03/30 21:01 36.272N 137.078E H=279km M4.0㧔᧻ේ⺈㧕ෳ ⠨ ᢥ ₂1㧕㒐ἴ⑼ቇᛛⴚ⎇ⓥᚲ㧦㪉㪇㪇㪐ᐕ㪉᦬㪈ᣣ⨙ၔ⋵᧲ᣇᴒ䈱࿾㔡㧘ㅪ⛊ળႎ㧘82㧔2009㧕2㧕㒐ἴ⑼ቇᛛⴚ⎇ⓥᚲ㧦㪉㪇㪇㪐ᐕ㪉᦬㪈㪎ᣣ㩷 ᚱ✚ඨፉධ᧲ㇱ䈱࿾㔡㧘ㅪ⛊ળႎ㧘82㧔2009㧕- 141 -╙ 1 ࿑ ᦬೎㔡ḮಽᏓ࿑㧔2008 ᐕ 11 ᦬㧕
Fig. 1 Monthly plot of hypocenters. (November, 2008)- 142 -╙ 2 ࿑ ᦬೎㔡ḮಽᏓ࿑㧔2008 ᐕ 12 ᦬㧕
Fig. 2 Monthly plot of hypocenters. (December, 2008)- 143 -╙ 3 ࿑ ᦬೎㔡ḮಽᏓ࿑㧔2009 ᐕ 1 ᦬㧕Fig. 3 Monthly plot of hypocenters. (January, 2009)- 144 -

╙ 4 ࿑ ᦬೎㔡ḮಽᏓ࿑㧔2009 ᐕ 2 ᦬㧕Fig. 4 Monthly plot of hypocenters. (February, 2009)- 145 -

╙ 5 ࿑ ᦬೎㔡ḮಽᏓ࿑㧔2009 ᐕ 3 ᦬㧕Fig. 5 Monthly plot of hypocenters. (March, 2009)- 146 -

╙ 6 ࿑ ᦬೎㔡ḮಽᏓ࿑㧔2009 ᐕ 4 ᦬㧕Fig. 6 Monthly plot of hypocenters. (April, 2009)- 147 -