Variability of Ground Motion Amplitudes Recorded in Bucharest Area during Vrancea Intermediate-Depth Earthquakes

Table 1

Characteristics of the earthquakes in the database.

No.	Date	Moment magnitude (MW)	Focal depth (km)	Focal mechanism	No. of ground motion recordings	Epicentral distance range (km)	PGA range (g)
1	04.03.1977	7.4	94	Reverse	1	101	0.21
2	30.08.1986	7.1	131	Reverse	14	101–135	0.05–0.16
3	30.05.1990	6.9	91	Reverse	13	145–178	0.06–0.22
4	31.05.1990	6.4	87	Reverse	9	161–181	0.01–0.04
5	28.04.1999	5.3	151	Reverse	6	90–128	0.01–0.04
6	06.04.2000	5.0	143	Reverse	3	123–163	0.01–0.02
7	27.10.2004	6.0	105	Reverse	21	149–168	0.02–0.06
8	14.05.2005	5.5	149	Reverse	16	109–149	<0.01
9	18.06.2005	5.2	154	Reverse	16	120–160	<0.01
10	25.04.2009	5.4	110	Reverse	10	115–155	0.01–0.03
11	06.10.2013	5.2	135	Reverse	10	113–154	0.01–0.04