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2018年6月18日大阪府北部の地震
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1.地震について (Earthquake Information)

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2018/06/18,07:58:34.210 34.8421 135.6227 13.7 6.2
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Table1. Earthquake information. Origin time, Epicentral latitude, longitude, depth, and JMA magnitude from the left.(ref. Hi-net catalog)

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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   [02] 18/06/18-07:58:34 6- M6.0 34.8N 135.6E 010km (18/06/18-07:58:41)
   [10] 18/06/18-07:58:33 6- M6.2 34.8N 135.6E 020km (18/06/18-07:58:48)
   [12] 18/06/18-07:58:34 6- M6.1 34.8N 135.6E 010km (18/06/18-07:58:52)
   [13] 18/06/18-07:58:34 6- M6.1 34.8N 135.6E 010km (18/06/18-07:59:01)
   [14] 18/06/18-07:58:34 6- M6.1 34.8N 135.6E 010km (18/06/18-07:59:03)
   [15] 18/06/18-07:58:34 6- M6.1 34.8N 135.6E 010km (18/06/18-07:59:08)
   [16] 18/06/18-07:58:34 6- M6.1 34.8N 135.6E 010km (18/06/18-07:59:10)
   [17] 18/06/18-07:58:34 6- M6.1 34.8N 135.6E 010km (18/06/18-07:59:25)
   [18] 18/06/18-07:58:34 6- M6.1 34.8N 135.6E 010km (18/06/18-07:59:45)
   [19] 18/06/18-07:58:34 6- M6.1 34.8N 135.6E 010km (18/06/18-08:00:02)
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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.観測記録 (Observed Records)

Fig.3. Peak Ground Acceleration (left) and Peak Ground Velocity (right).

Fig.4. JMA seismic intensity.

Fig.5. Population exposure. A circle size shows the population at the town, and a circle color shows the seismic intensity at the town.

Fig.6. Seismic activity of past 40 years.

5.解析結果 (Analytical Result)

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   OSK0021806180758 135.596 34.857 1.070 4.910 2.983 6.2 5.5
   OSK0041806180758 135.639 34.741 1.358 15.670 11.374 6.2 5.8
   OSKH041806180758 135.705 34.763 2.511 3.070 11.576 6.2 6.3
   KYTH071806180758 135.746 34.898 1.683 3.330 12.891 6.2 6.0
   OSK0031806180758 135.468 34.767 1.185 15.220 16.412 6.2 5.6
   OSK0051806180758 135.510 34.725 0.899 15.140 16.550 6.2 5.4
   OSKH051806180758 135.520 34.716 0.613 3.980 16.868 6.2 5.0
   NAR0011806180758 135.727 34.715 0.560 15.070 17.002 6.2 4.9
   KYT0131806180758 135.805 34.878 0.952 14.940 17.124 6.2 5.4
   KYT0111806180758 135.564 35.017 0.361 15.430 20.136 6.2 4.5
   Observed/Estimated Mw(median) tauc 6.2 5.45 1.0
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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) , magnitude, and estimated magnitude from the left.