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2009年10月30日奄美大島沖地震
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1.地震について (Earthquake Information)

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2009/10/30,16:03:38.94 29.167 129.937 60.2 6.8
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Table1. Earthquake information. Origin time, Epicentral latitude, longitude, depth, and JMA magnitude from the left.(ref. JMA source mechanism)

Fig.1. Event location.

2.観測点分布 (Station Distribution)

Fig.2. Station Distribution.

3.緊急地震速報発信状況 (Earthquake Early Warning Report)

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   [01] 09/10/30-16:03:38 04 M6.1 29.2N 129.8E 070km (09/10/30-16:03:57)
   [02] 09/10/30-16:03:38 04 M6.2 29.2N 130.0E 070km (09/10/30-16:04:01)
   [04] 09/10/30-16:03:39 04 M6.0 29.2N 129.9E 060km (09/10/30-16:04:04)
   [05] 09/10/30-16:03:39 04 M6.3 29.2N 129.9E 060km (09/10/30-16:04:14)
   [06] 09/10/30-16:03:39 5- M6.8 29.2N 129.9E 060km (09/10/30-16:04:19)
   [07] 09/10/30-16:03:39 5- M6.8 29.2N 129.9E 060km (09/10/30-16:04:23)
   [08] 09/10/30-16:03:39 5- M6.8 29.2N 129.9E 060km (09/10/30-16:04:43)
   [09] 09/10/30-16:03:39 5- M6.8 29.2N 129.9E 060km (09/10/30-16:05:01)
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（左から順に情報番号，震源時，最大予測震度，マグニチュード，震央緯度，震央経度，震源深さ，電文発表時刻） from CEORKA
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Table2. Earthquake early warning reports. Information ID, Origin time, Maximum Intensity, JMA magnitude, Epicentral latitude, longitude, depth, and time to issue the report from the left.(ref. The Committee of Earthquake Observation and Research in the Kansai Area)

気象庁による緊急地震速報の内容

4.解析結果 (Analytical Result)

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   KGS0300910301603.z 129.678 28.451 1.327 14.530 83.274 6.8
   KGS0310910301603.z 129.393 28.355 1.246 17.860 104.480 6.8
   KGS0320910301603.z 129.321 28.139 1.818 21.260 128.907 6.8
   KGS0290910301603.z 130.555 30.236 1.011 21.440 132.775 6.8
   KGS0280910301603.z 130.577 30.420 0.766 23.950 152.098 6.8
   KGS0270910301603.z 130.883 30.349 1.985 26.080 159.783 6.8
   KGS0260910301603.z 130.954 30.520 2.144 102.580 179.345 6.8
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Table3. Analytical results using Tau_c method (Wu and Kanamori, 2005). Station ID, Station longitude, latitude, tauc, P-arrival time, epicentral distance(km) , and magnitude from the left.

5.観測記録 (Observed Records)

Fig.3. Peak Ground Acceleration.