The 2011 off the Pacific coast of Tohoku Earthquake of March 11, 2011 (M=9.0, h=24 km)

Event

Update Information

• March 13, 2011: First edition was published.
• March 15, 2011: Second edition was published. Strong motion records at stations HRO, SMD, EDG, ICK, FNB, YCY and CHB were added.
• March 18, 2011: Third edition was published. Strong motion records at stations HCN, MST, ADC and UTK were added.
• March 23, 2011: Fourth edition was published. Strong motion records at stations THU, BRI, TDS, AKB, NKN, TUF, KDI, KWS, HKD, KSO and MIZ were added.
• March 30, 2011: Fifth edition was published. Strong motion records at stations MYK, IWK, SIT2 and SITA were added.
• January 31, 2012: Final version was uploaded.

PDF report

• BRI Strong Motion Prompt Report of the 2011 Pacific coast of Tohoku Earthquake (1st Ed. on March 13, 2011, in Japanese)
• BRI Strong Motion Prompt Report of the 2011 Pacific coast of Tohoku Earthquake (2nd Ed. on March 15, 2011, in Japanese)
• BRI Strong Motion Prompt Report of the 2011 Pacific coast of Tohoku Earthquake (3rd Ed. on March 18, 2011, in Japanese)
• BRI Strong Motion Prompt Report of the 2011 Pacific coast of Tohoku Earthquake (4th Ed. on March 23, 2011, in Japanese)
• BRI Strong Motion Prompt Report of the 2011 Pacific coast of Tohoku Earthquake (5th Ed. on March 30, 2011, in Japanese)

Site Location

List of Records

Code	Site	Δ (km)	IJMA	Azim.	Loc.	Peak Acc. (cm/s2)			Notes
						H1	H2	V
SND	Sendai Government Office Bldg. #2	175	5.2	074°	B2F*	163	259	147
					15F	361	346	543
THU	Tohoku University	177	5.6	192°	01F*	333	330	257
					09F	908	728	640
MYK	Miyako City Hall	188	4.8	167°	01F	138	122	277
					07F	246	197	359
					GL*	174	174	240
IWK	Iwaki City Hall	209	5.3	180°	B1F*	175	176	147
					09F	578	449	260
TRO	Tsuruoka Government Office Bldg.	275	3.9	182°	01F*	34	36	14
					04F	37	39	15
HCN2	Annex, Hachinohe City Hall	292	5.2	164°	GL*	286	210	61
					G30	86	89	49
					G105	36	46	32
					10F	120	123	205
					01F	91	122	73
					B1F	100	104	58
HCN	Hachinohe City Hall	292	4.6	164°	B1F*	97	110	55
					06F	348	335	78
AKT	Akita Prefectural Office	298	4.3	087°	08F	175	192	44
					B1F*	50	47	24
NCTD	National Center for Teachers Development	330	5.4	350°	GL*	373	375	376
					1FE	296	374	191
					1FEs	297	350	230
					1FS	308	352	234
					8FE	798	593	263
					8FW	814	646	274
ANX	Annex and Main Bldg., Building Research Institute	330	5.3	180°	A01*	279	227	248
					A89	142	153	102
					BFE	194	191	136
					8FE	597	505	344
					MBC	203	206	152
					M8C	682	585	311
BRI	Seismological Training Laboratory, Building Research Institute	330	5.4	180°	01F*	281	273	165
TKC	Tsukuba City Hall	334	5.2	004°	B1F*	327	233	122
					01F	92	76	198
					06F	126	91	243
NIG	Niigata City Hall	335	3.9	061°	B1F*	27	40	14
					07F	39	55	14
MTK	Mitsukaido Branch, Shimodate River Office	344	5.3	090°	01F*	261	256	183
HRH	Hirosaki Legal Affairs Office	346	3.4	195°	01F*	27	25	15
TUS	Noda Campus, Tokyo Univ. Of Science	357	5.1	000°	01F*	269	263	150
YCY	Yachiyo City Hall	361	5.3	302°	B1F	140	135	92
					GL*	312	306	171
					07F	486	359	145
NIT	Nippon Institute of Technology	362	5.1	288°	GL*	230	197	79
					01F	150	119	63
					06F	283	322	131
MST	Misato City Hall	367	4.9	258°	01F	72	104	71
					GL*	130	127	73
					07F	219	190	106
FNB	Educational Center, Funabashi City	368	4.7	357°	01F	144	147	63
					GL*	133	145	105
					08F	359	339	141
CHB	Chiba Government Office Bldg. #2	369	4.9	346°	B1F	152	122	51
					08F	375	283	117
					GL*	168	175	100
ICK	Gyotoku Library, Ichikawa City	375	5.2	321°	01F*	164	163	71
					02F	178	186	80
					05F	240	300	104
EDG	Edogawa Ward Office	377	4.8	003°	01F*	112	112	69
					05F	256	299	77
ADC	Adachi Government Office Bldg.	377	4.8	012°	01F*	118	103	71
					04F	266	146	95
SIT2	Saitama Shintoshin Government Office Building #2	378	4.4	340°	B3F*	74	63	42
					10FS	119	138	62
					10FN	118	155	66
					27FS	248	503	106
					27FC	265	686	185
SITA	Saitama Shintoshin Government Office Building (Arena)	378	4.5	313°	01F*	90	105	47
TDS	Toda City Hall	380	5.0	354°	GL*	203	206	53
					B1F	140	173	65
					08F	425	531	160
AKB	Akabane Hall, Kita Ward	380	4.6	354°	B1F*	85	139	59
					06F	180	250	86
SMD	Sumida Ward Office	380	4.3	000°	20F	385	290	81
					08F	263	197	46
					B1F*	69	66	34
NMW	Main Building, National Museum of Western Art	382	4.8	218°	GL*	265	194	150
					B1FW	100	79	84
					B1FE	114	3	92
					01FW	76	89	87
					01FE	90	86	96
					04F	100	77	90
UTK	University of Tokyo	383	4.7	348°	7FN	181	212	58
					7FS	201	360	160
					01F	73	151	49
					GL*	197	218	79
TKD	Kosha Tower Tsukuda	385	4.4	180°	01F*	87	98	41
					18F	118	141	64
					37F	162	198	108
CGC	Central Government Office Bldg. #6	386	4.4	208°	01F*	91	85	45
					20B	210	150	173
					19C	177	135	130
CG2	Central Government Office Bldg. #2	386	4.2	208°	B4F*	75	71	49
					13F	137	113	72
					21F	121	131	104
CG3	Central Government Office Bldg. #3	386	4.5	208°	B3F*	104	91	58
					B2F	55	55	55
					12F	94	82	104
NDLA	Annex, National Diet Library	387	4.5	345°	B8F	61	88	53
					B4F	68	101	56
					01F*	76	104	84
					04F	125	192	94
NDLG	Ground, National Diet Library	387	5.0	345°	G35	72	71	51
					G24	95	116	54
					GL*	224	201	93
NDLM	Main Bldg., National Diet Library	387	4.5	345°	01S*	70	94	60
					17S	458	489	111
NKN	Nakano Branch, Tokyo Legal Affairs Bureau	390	4.8	359°	06F	172	375	56
					01F*	126	158	54
TUF	Tokyo University of Marine Science and Technology	390	5.0	000°	01F	174	169	60
					GL*	181	189	71
					07F	316	223	66
KDI	College of Land, Infrastructure and Transport	401	4.6	090°	03F	129	329	55
					01F	110	136	53
					GL*	167	143	50
KWS	Kawasaki-minami Office, Labour Standards Bureau	401	4.7	045°	01F*	107	77	30
					02F	133	123	49
					07F	366	304	76
YKH	Yokohama Government Office Bldg. #2	412	4.3	213°	23F	162	96	72
					B2F*	60	64	30
NGN	Nagano Prefectural Office	444	2.7	157°	B1F*	8	7	8
					11F	35	27	9
HKD	Hakodate Development and Construction Department	447	3.5	180°	GL*	25	28	13
HRO	Hiroo Town Office	466	2.7	140°	01F*	17	20	8
YMN	Yamanashi Prefectural Office	468	3.9	006°	B1F	46	39	18
					GL*	51	44	20
					01F	37	52	20
					08F	41	51	25
SMS	Shimoda Office, Shizuoka Prefecture	517	2.9	225°	GL*	12	19	10
SMZ	Shimizu Government Office Bldg.	520	4.2	165°	01F*	28	41	15
					06F	81	56	18
KSO	Kiso Office, Nagano Prefecture	524	2.6	292°	B1F*	9	10	8
					06F	32	31	10
KGC	Kushiro Government Office Bldg.	558	2.6	167°	GL*	12	14	6
					G10	10	10	4
					G34	5	5	3
					B1F	8	12	4
					01F	10	16	6
					09F	16	19	12
HKU	Hokkaido University	567	2.7	172°	GL*	10	9	5
ISK	Hirosaka Office #1, Ishikawa Prefecture	574	2.0	174°	05F	6	4	3
					B2F*	5	4	3
NGY	Nagoya Government Office Bldg. #1	623	3.1	174°	GL*	8	15	0
					B2F	9	14	7
					12F	25	46	7
MTS	Matsusaka Office, Mie Prefecture	688	2.3	216°	07F	16	8	4
					01F*	6	5	3
MIZ	Maizuru City Hall	726	0.9	085°	01F*	1	2	2
					05F	1	1	2
OSK	Osaka Government Office Bldg. #3	759	2.9	189°	18F	65	38	7
					B3F*	11	9	5
SKS	Sakishima Office, Osaka Prefecture	770	3.0	229°	01F*	34	33	80
					18F	41	39	61
					38F	86	56	18
					52FN	126	88	13
					52FS	130	85	12

Legend