civil-engg-image

Foundation concrete earthquake

2012-12-12T07:43:00.001-08:00

Foundation Sinking of Tower of Pisa

2012-03-24T11:02:00.000-07:00

Foundation Sinking of Tower of Pisa

Failure of Million Dollar Bridge on the Copper River Highway in 1964 Alaska Earthquake

2012-03-20T22:50:00.001-07:00

Failure of Million Dollar Bridge on the Copper River Highway in 1964 Alaska Earthquake

READ THIS POST -CLICK

P-Wave Travel Times of Magnitude 4.6 Earthquake of BANGLADESH 2012 March 18

2012-03-20T22:21:00.003-07:00

P-Wave Travel Times of Magnitude 4.6 Earthquake of BANGLADESH 2012 March 18
READ THIS POST-CLICK

Earthquake Zone Map of India

2011-09-09T01:50:00.000-07:00

Seismic Energy Dissipation Devices

2011-05-23T07:40:00.000-07:00

Seismic Energy Dissipation Devices

Magnitude 5.7 Earthquake of NEAR THE EAST COAST OF HONSHU, JAPAN 2011 May 07

2011-05-07T22:25:00.000-07:00

Magnitude : 5.7
Date-Time : Saturday, May 07, 2011 at 20:52:19 UTC
Sunday, May 08, 2011 at 05:52:19 AM at epicenter

Location : 40.256°N, 142.453°E

Depth : 23.9 km (14.9 miles)

Region : NEAR THE EAST COAST OF HONSHU, JAPAN

Distances: 86 km (53 miles) ESE of Hachinohe, Honshu, Japan
127 km (78 miles) ENE of Morioka, Honshu, Japan

156 km (96 miles) ESE of Aomori, Honshu, Japan

560 km (347 miles) NNE of TOKYO, Japan

Location Uncertainty : horizontal +/- 17.8 km (11.1 miles); depth +/- 6.6 km (4.1 miles)

Magnitude 5.1 Earthquake OFFSHORE VALPARAISO, CHILE 2011 May 07

2011-05-07T01:38:00.000-07:00

Magnitude : 5.1
Date-Time : Saturday, May 07, 2011 at 06:57:32 UTC

Saturday, May 07, 2011 at 02:57:32 AM at epicenter

Location : 33.841°S, 72.214°W

Depth : 27.5 km (17.1 miles)

---------------------------------------------------------------------------------

Region : OFFSHORE VALPARAISO, CHILE

Distances: 65 km (40 miles) WSW of San Antonio, Valparaiso, Chile

108 km (67 miles) SW of Valparaiso, Valparaiso, Chile

143 km (88 miles) WNW of Rancagua, Libertador O'Higgins, Chile

154 km (95 miles) WSW of SANTIAGO, Region Metropolitana, Chile

Location Uncertainty : horizontal +/- 20 km (12.4 miles); depth +/- 5.3 km (3.3 miles)

Map of Chile

Parameters : NST=218, Nph=231, Dmin=146.9 km, Rmss=0.79 sec, Gp=108°,
M-type=body wave magnitude (Mb), Version=9

Magnitude 6.0 Earthquake of SOUTH OF PANAMA 2011 April 30

2011-05-06T06:34:00.000-07:00

2011 April 30 08:19:16 UTC: SOUTH OF PANAMA
Magnitude : 6.0

Date-Time    :   Saturday, April 30, 2011 at 08:19:16 UTC
                             Saturday, April 30, 2011 at 03:19:16 AM at epicenter

Location         : 6.878°N, 82.287°W

Depth : 9.9 km (6.2 miles)

Region : SOUTH OF PANAMA

Distances : 178 km (110 miles) S of David, Panama

200 km (124 miles) SW of Santiago, Panama

222 km (137 miles) SSE of Golfito, Costa Rica

384 km (238 miles) SW of PANAMA CITY, Panama

Map of Panama

Location Uncertainty : horizontal +/- 15.4 km (9.6 miles); depth +/- 2.7 km (1.7 miles)

Map of PACIFIC OCEAN

Parameters : NST=399, Nph=406, Dmin=369.6 km, Rmss=1.33 sec, Gp= 58°,
M-type=teleseismic moment magnitude (Mw), Version=A

Magnitude 5.8 Earthquake of ALASKA PENINSULA 2011 May 05

2011-05-06T06:18:00.000-07:00

2011 May 05 14:13:01 UTC: ALASKA PENINSULA
Magnitude : 5.8
Date-Time : Thursday, May 05, 2011 at 14:13:01 UTC

Thursday, May 05, 2011 at 06:13:01 AM at epicenter

Location : 55.118°N, 160.568°W

Depth : 39.1 km (24.3 miles)

Region : ALASKA PENINSULA

Distances: 24 km (14 miles) S of Sand Point, Alaska
75 km (46 miles) WNW of Chernabura Island, Alaska

923 km (573 miles) SW of Anchorage, Alaska

1622 km (1007 miles) W of WHITEHORSE, Yukon Territory, Canada

Location Uncertainty : horizontal +/- 13.7 km (8.5 miles); depth +/- 7.1 km (4.4 miles)

Parameters : NST=482, Nph=531, Dmin=26.7 km, Rmss=1.06 sec, Gp= 47°,
M-type=local magnitude (ML), Version=B

Magnitude 5.8 Earthquake of GUERRERO, MEXICO 2011 May 05

2011-05-06T06:15:00.000-07:00

2011 May 05 13:24:06 UTC: GUERRERO, MEXICO
Magnitude : 5.8
Date-Time : Thursday, May 05, 2011 at 13:24:06 UTC

Thursday, May 05, 2011 at 08:24:06 AM at epicenter

Location : 16.808°N, 98.592°W

Depth : 10.2 km (6.3 miles)

Region : GUERRERO, MEXICO

Distances: 126 km (78 miles) SE of Chilpancingo, Guerrero, Mexico
138 km (85 miles) E of Acapulco, Guerrero, Mexico

140 km (86 miles) SW of Huajuapan de Leon, Oaxaca, Mexico

295 km (183 miles) SSE of MEXICO CITY, D.F., Mexico

Location Uncertainty : horizontal +/- 16.6 km (10.3 miles); depth +/- 2.6 km (1.6 miles)

Map of Mexico

Parameters : NST=321, Nph=324, Dmin=83.5 km, Rmss=0.68 sec, Gp= 58°,
M-type=regional moment magnitude (Mw), Version=8

Magnitude 6.1 Earthquake OFF THE EAST COAST OF HONSHU, JAPAN 2011 May 05

2011-05-06T06:07:00.000-07:00

2011 May 05 14:58:21 UTC: OFF THE EAST COAST OF HONSHU, JAPAN
Magnitude : 6.1
Date-Time : Thursday, May 05, 2011 at 14:58:21 UTC

Friday, May 06, 2011 at 12:58:21 AM at epicenter

Location : 38.173°N, 144.040°E

Depth : 24.2 km (15.0 miles)

Legend: Major Tectonic Boundaries: Subduction Zones -purple, Ridges -red and Transform Faults -green

Region : OFF THE EAST COAST OF HONSHU, JAPAN

Distances: 276 km (171 miles) E of Sendai, Honshu, Japan
302 km (187 miles) ESE of Morioka, Honshu, Japan

305 km (189 miles) ENE of Iwaki, Honshu, Japan

471 km (292 miles) NE of TOKYO, Japan

Map of PACIFIC OCEAN

Location Uncertainty : horizontal +/- 15.3 km (9.5 miles); depth +/- 7.1 km (4.4 miles)

Map of Japan

Parameters : NST=354, Nph=354, Dmin=434.1 km, Rmss=0.63 sec, Gp= 32°,
M-type=regional moment magnitude (Mw), Version=8

Magnitude 2.7 Earthquake NORTHERN CALIFORNIA 2011 May 06

2011-05-06T06:03:00.000-07:00

2011 May 06 02:39:32 UTC: NORTHERN CALIFORNIA
Magnitude : 2.7
Date-Time : Friday, May 06, 2011 at 02:39:32 UTC

Thursday, May 05, 2011 at 07:39:32 PM at epicenter

Location : 38.793°N, 122.764°W

Depth : 1.9 km (1.2 miles)

Region : NORTHERN CALIFORNIA

Distances: 4 km (2 miles) E (99°) from The Geysers, CA
6 km (4 miles) SW (218°) from Cobb, CA

7 km (4 miles) WNW (288°) from Anderson Springs, CA

39 km (24 miles) N (352°) from Santa Rosa, CA
115 km (72 miles) WNW (284°) from Sacramento, CA

Magnitude 5.5 Earthquake SULAWESI, INDONESIA 2011 May 06

2011-05-06T05:56:00.000-07:00

2011 May 06 06:46:23 UTC: SULAWESI, INDONESIA
Magnitude : 5.5
Date-Time : Friday, May 06, 2011 at 06:46:23 UTC

Friday, May 06, 2011 at 02:46:23 PM at epicenter

Location : 0.125°S, 122.896°E

Depth : 87.1 km (54.1 miles)

Region : SULAWESI, INDONESIA

Distances: 77 km (47 miles) SSW of Gorontalo, Sulawesi, Indonesia
280 km (173 miles) SW of Manado, Sulawesi, Indonesia

977 km (607 miles) NNW of DILI, Timor-Leste

1621 km (1007 miles) NNW of DARWIN, Northern Territory, Australia

Location Uncertainty : horizontal +/- 13.1 km (8.1 miles); depth +/- 5.5 km (3.4 miles)

Map of Indonesia

Parameters : NST=427, Nph=461, Dmin=102.4 km, Rmss=0.89 sec, Gp= 22°,
M-type=teleseismic moment magnitude (Mw), Version=B

Japanese Tsunami Wall, Tsu-Shi

2011-03-16T09:50:00.000-07:00

Along some coastal areas of japan where population density is high, tsunami walls are extensively built as tsunami protection. Japan is the more prominent country which has used tsunami walls to have protection against locally generated tsunami. These walls are of 4.5 metres. Theses walls are also designed to redirect water in the event of a tsunami facilitating floodgates and channel.

Tectonic Summary Of Magnitude 8.9 - Near the East Coast Of Honshu, Japan (2011 March 11 05:46:23 UTC)

2011-03-12T20:16:00.001-08:00

The thrust faulting on or near the subduction zone interface plate boundary between the Pacific and North America plates results earthquake near the east coast of Honshu, Japan (03/11/2011). The preliminary magnitude is 8.9. At the latitude of this earthquake, the Pacific plate moves approximately westwards with respect to the North America plate at a velocity of 83 mm/yr. The Pacific plate thrusts underneath Japan at the Japan Trench, and dips to the west beneath Eurasia. The location, depth, and focal mechanism of the March 11 earthquake are consistent with the event having occurred as thrust faulting associated with subduction along this plate boundary. Note that some authors divide this region into several microplates that together define the relative motions between the larger Pacific, North America and Eurasia plates; these include the Okhotsk and Amur microplates that are respectively part of North America and Eurasia.

Legend for fig-1to fig-3(Earthquake Location)

fig-1

fig-2

fig-3

The March 11 earthquake was preceded by a series of large foreshocks over the previous two days, beginning on March 9th with an M 7.2 event approximately 40 km from the March 11 earthquake, and continuing with a further 3 earthquakes greater than M 6 on the same day.

fig-4 ( Map of JAPAN)

The Japan Trench subduction zone has hosted 9 events of magnitude 7 or greater since 1973. The largest of these was an M 7.8 earthquake approximately 260 km to the north of the March 11 event, in December 1994, which caused 3 fatalities and almost 700 injuries. In June of 1978, an M 7.7 earthquake 35 km to the southwest caused 22 fatalities and over 400 injuries

PEAK GROUND VELOCITY OF SOUTH ISLAND, NEW ZEALAND EARTHQUAKE, 11/02/21 23:51 UTC

2011-03-10T13:25:00.000-08:00

2011 February 21 23:51:43 UTC: SOUTH ISLAND, NEW ZEALAND

Magnitude : 6.3

Date-Time : Monday, February 21, 2011 at 23:51:43 UTC

Tuesday, February 22, 2011 at 12:51:43 PM at epicenter

Location : 43.600°S, 172.710°E

Depth : 5 km (3.1 miles)

Region : SOUTH ISLAND OF NEW ZEALAND

Distances           : NEAR Christchurch, New Zealand
           225 km (140 miles) SSE of Westport, New Zealand
           305 km (190 miles) SSW of WELLINGTON, New Zealand
           310 km (190 miles) NE of Dunedin, New Zealand

Location Uncertainty : horizontal +/- 12.2 km (7.6 miles); depth +/- 0.6 km (0.4 miles)

Parameters : Nph= 0, Dmin=0 km, Rmss=0.98 sec, Gp= 0,
M-type="moment" magnitude from initial P wave (tsuboi method) (Mi/Mwp),

Version=D (Institute of Geological and Nuclear Sciences, Lower Hutt, New Zealand)

FIG: Peak Ground Velocity( in cm/s) (USGS Shakemap)

Testing rig for compressive test on pile using tension piles for reaction

2011-03-09T00:15:00.000-08:00

UNCERTAINTY OF SOUTH ISLAND, NEW ZEALAND EARTHQUAKE, 11/02/21 23:51 UTC

2011-03-07T04:06:00.000-08:00

2011 February 21 23:51:43 UTC: SOUTH ISLAND, NEW ZEALAND

Magnitude : 6.3

Date-Time : Monday, February 21, 2011 at 23:51:43 UTC

Tuesday, February 22, 2011 at 12:51:43 PM at epicenter

Location : 43.600°S, 172.710°E

Depth : 5 km (3.1 miles)

Region : SOUTH ISLAND OF NEW ZEALAND

Location Uncertainty : horizontal +/- 12.2 km (7.6 miles); depth +/- 0.6 km (0.4 miles)

Parameters : Nph= 0, Dmin=0 km, Rmss=0.98 sec, Gp= 0,
M-type="moment" magnitude from initial P wave (tsuboi method) (Mi/Mwp),

Version=D (Institute of Geological and Nuclear Sciences, Lower Hutt, New Zealand)

FIG: PGA/SIGMA Map( in%g) (USGS Shakemap)

Tectonic Summary of South Island, New Zealand Earthquake, 11/02/21 23:51 UTC

2011-03-04T07:46:00.000-08:00

The February 21st earthquake involved oblique-thrust faulting at the easternmost limit of previous aftershocks, and like the mainshock itself is broadly associated with regional plate boundary deformation as the Pacific and Australia plates interact in the central South Island, New Zealand. The February 21, 2011 South Island, New Zealand earthquake occurred as part of the aftershock sequence of the M 7.0 September 3, 2010 Darfield, NZ earthquake.

Legend for all fig: Major Tectonic Boundaries: Subduction Zones -purple, Ridges -red and Transform Faults -green.

This latest shock is significantly closer to the main population center of Christchurch, NZ, than is the September 2010 mainshock, in the vicinity of several other moderate (M 4 to 5) sized aftershocks located east of the main rupture zone of the 2010 event.

There is no specific structure directly linking this event to the main fault of the 2010 mainshock, although there have been numerous aftershocks along generally east-west linear trends extending east from the end of the previous rupture. The north or north-east trends to the possible fault planes and the oblique thrust faulting mechanism as seen in the focal mechanism solution may reflect an association with similarly-trending faults previously mapped in the Port Hills region, just to the south of Christchurch.

Since the September 3, 2010 mainshock, there have been approximately 6 M>=5.0 aftershocks in the Christchurch region. The February 21st earthquake represents the largest aftershock to date, more that half a magnitude unit larger than the previous largest aftershock.

Seismicity in the vicinity of Christchurch, New Zealand, following the September 3, 2010, M7.0, Darfield earthquake (yellow circles) and the February 21, 2011, M6.3, Christchurch earthquake (orange circles). Data from GNS Science, New Zealand.

Testing rig for compressive test on pile using cable anchors for reaction

2011-03-01T08:35:00.000-08:00

PEAK GROUND ACCELERATION OF SOUTH ISLAND, NEW ZEALAND EARTHQUAKE, 11/02/21 23:51 UTC

2011-02-26T07:38:00.000-08:00

2011 February 21 23:51:43 UTC: SOUTH ISLAND, NEW ZEALAND

Magnitude : 6.3

Date-Time : Monday, February 21, 2011 at 23:51:43 UTC

Tuesday, February 22, 2011 at 12:51:43 PM at epicenter

Location : 43.600°S, 172.710°E

Depth : 5 km (3.1 miles)

Region : SOUTH ISLAND OF NEW ZEALAND

Location Uncertainty : horizontal +/- 12.2 km (7.6 miles); depth +/- 0.6 km (0.4 miles)

Parameters : Nph= 0, Dmin=0 km, Rmss=0.98 sec, Gp= 0,
M-type="moment" magnitude from initial P wave (tsuboi method) (Mi/Mwp),

Version=D (Institute of Geological and Nuclear Sciences, Lower Hutt, New Zealand)

FIG: Peak Ground Acceleration( in%g) (USGS Shakemap)

MOST RECENT EARTHQUAKES OF SOUTH ISLAND OF NEW ZEALAND QUAKE, 11/02/21 23:51 UTC

2011-02-25T09:20:00.000-08:00

INTENSITY OF SOUTH ISLAND, NEW ZEALAND EARTHQUAKE, 11/02/21 23:51 UTC

2011-02-24T23:34:00.000-08:00

2011 February 21 23:51:43 UTC: SOUTH ISLAND, NEW ZEALAND

Magnitude : 6.3

Date-Time : Monday, February 21, 2011 at 23:51:43 UTC

Tuesday, February 22, 2011 at 12:51:43 PM at epicenter

Location : 43.600°S, 172.710°E

Depth : 5 km (3.1 miles)

Region : SOUTH ISLAND OF NEW ZEALAND

Location Uncertainty : horizontal +/- 12.2 km (7.6 miles); depth +/- 0.6 km (0.4 miles)

Parameters : Nph= 0, Dmin=0 km, Rmss=0.98 sec, Gp= 0,
M-type="moment" magnitude from initial P wave (tsuboi method) (Mi/Mwp),

Version=D (Institute of Geological and Nuclear Sciences, Lower Hutt, New Zealand)

FIG: Instrumental Intensity (USGS Shakemap)

Testing rig for compressive test on pile using kentledge for reaction

2011-02-22T09:36:00.000-08:00