Quake Watch 2011

Magnitude ML 5.0
Region CRETE, GREECE
Date time 2011-11-23 12:17:53.5 UTC
Location 34.35 N ; 25.05 E
Depth 10 km
Distances 109 km S Iráklion (pop 137,154 ; local time 14:17:53.5 2011-11-23)
97 km SW Ierápetra (pop 12,536 ; local time 14:17:53.5 2011-11-23)
73 km S Pírgos (pop 1,134 ; local time 14:17:53.5 2011-11-23)(source

Man I am fast


Magnitude
5.3
Date-Time
Wednesday, November 23, 2011 at 12:17:51 UTC
Wednesday, November 23, 2011 at 02:17:51 PM at epicenter
Location
34.321°N, 25.056°E
Depth
9.7 km (6.0 miles)
Region
CRETE, GREECE
Distances
113 km (70 miles) S (187°) from Iraklion, Crete, Greece
163 km (102 miles) SE (144°) from Chania, Crete, Greece
268 km (167 miles) NNE (22°) from Tubruq, Libya
426 km (265 miles) SSE (163°) from ATHENS, Greece,source(earthquake.usgs.gov...

EMSC has it revised to a 5.5, and there since has been a 4.7 in the same location. USGS is saying 5.3 and 4.8 for the latest.

Aftershock or no? I knocked out for 26 hours so I was a bit surprised to log on and see a Yellowstone EQ and a 3.1 in Montana. Last time I saw a Yellowstone quake was 2 days before 3/11.

reply to post by TrueAmerican

Yeah all over the place.
Out of them all that I listed very shortly after the quake, Geofon (GFZ) seem to be the most reliable, they have not changed their original estimate, in fact all they did was confirm the automatic estimate ( the C in the GFZ list) and add the beachball (moment tensor solution)
The Peruvians were pretty spot on too.
I always trust the locals over the Networks.
Original estimates

Originally posted by muzzy
reply to post by diamondsmith

 

This event has been reviewed by a seismologist.
Magnitude
6.2
GFZ= 6.5M
GeoAu=6.6Mw
EMSC=6.7Mw
DGF=6.7ML (Chile, but they used NEIC anyway)
IGPSIS=6.6ML Peru, shows last quake only so will change later

FWIW the Russians ( who are always slow) came in with 6.3mb

GeoAu used NOAA data originally and have since copied USGS, so NOAA was right in the first place, but they get their data from NEIC anyway........................................ oh never mind

Originally posted by murkraz
EMSC has it revised to a 5.5, and there since has been a 4.7 in the same location. USGS is saying 5.3 and 4.8 for the latest.

Aftershock or no?

probably, if the 2nd one was smaller. If the 2nd one was bigger than the 1st one then the 1st one would have been a foreshock
The Russians are saying 5.5 and 5.1 in that order, both mb, but the first one was 5.0Ms, no Ms conversion for the 2nd one.
www.ceme.gsras.ru...

The National Observatory of Athens are saying 5.1 and 4.3ML, I'd tend to believe them, they measure down to Mag 1.0
2011 NOV 23 12 17 48.2 34.12 25.03 10 5.1
2011 NOV 23 13 50 01.8 34.16 25.08 15 4.3
www.gein.noa.gr...

Japan just took another hit near Fukushima. JMA has it as a 6.0:
www.jma.go.jp...

Saw it in GEE pushing 300 microns/sec at MAJO. USGS report in a few, not listed yet.


Looking more like 5.5 to 5.9 range to me.


Yep 5.9 USGS

reply to post by TrueAmerican


EMSC has it at 5.9

www.emsc-csem.org...

5.9 for USGS now as well

earthquake.usgs.gov...

reply to post by PuterMan


Yeah must be, cause it is just over the "cross the Pacific" threshold of about 5.8. Sure enough, just registering on the Chile seismos now in GEE.

5.9 Honshu? That's a pretty big aftershock. Poor plates over that way are put through hell.

11/23 at 3.22pm Tokyo saw another bad omen,
directly inside of Tokyo Bay, depth of 90Km, Mag. 3,5 and max. intensity of 2!

First time a quake in Tokyo Bay since a long time

Originally posted by TrueAmerican
Japan just took another hit near Fukushima. JMA has it as a 6.0:
www.jma.go.jp...

Saw it in GEE pushing 300 microns/sec at MAJO. USGS report in a few, not listed yet.

edit on Wed Nov 23rd 2011 by TrueAmerican because: (no reason given)

Looking more like 5.5 to 5.9 range to me.

edit on Wed Nov 23rd 2011 by TrueAmerican because: (no reason given)

Yep 5.9 USGS

edit on Wed Nov 23rd 2011 by TrueAmerican because: (no reason given)

Yes but how near!

Originally posted by Human0815
11/23 at 3.22pm Tokyo saw another bad omen,
directly inside of Tokyo Bay, depth of 90Km, Mag. 3,5 and max. intensity of 2!

First time a quake in Tokyo Bay since a long time

edit on 23-11-2011 by Human0815 because: (no reason given)

You talking about this 4.0 right at the mouth of Tokyo Bay?
www.jma.go.jp...

That is darn close to the epicenter of the Great Kanto quake of 1923, and close to the southern zone. Man, I am real glad you mentioned it, cause USGS only has 4.5 and above. And I have been slack here lately in keeping a close eye on the JMA reports, so I missed it. I should probably document it over in the Final Warning To Tokyo thread. I sure hope that fault doesn't activate again with something major. But so far, you guys are just getting lesser adjustments like this. I don't honestly expect the same fault to go in that spot, cause the major stress was relieved in 1923.

But there is no way of knowing to what extent the 9.1 affected that zone.

reply to post by muzzy

too late to edit
scratch out NOAA, I meant PTWC

EMSC, USGS and JMA already reported so ........... that leaves;

GFZ=6.1Mw
RAS=6.2mb or 6.1Ms
GeoAu=6.1Mw (PTWC)

Yeah USGS is saying it was a 6.1 off Japan. 4.2 near Vancouver since.

VANCOUVER ISLAND, CANADA REGION
This event has been reviewed by a seismologist.
Magnitude
4.2
Date-Time
Wednesday, November 23, 2011 at 23:02:44 UTC
Wednesday, November 23, 2011 at 03:02:44 PM at epicenter
Time of Earthquake in other Time Zones
Location
50.752°N, 129.789°W
Depth
9.9 km (6.2 miles)
Region
VANCOUVER ISLAND, CANADA REGION
Distances
167 km (103 miles) W of Port Hardy, British Columbia, Canada
193 km (119 miles) SW of Bella Bella, British Columbia, Canada
505 km (313 miles) WNW of Vancouver, British Columbia, Canada
531 km (329 miles) WNW of VICTORIA, British Columbia, Canada
Location Uncertainty
horizontal +/- 26.3 km (16.3 miles); depth +/- 8.5 km (5.3 miles)
Parameters
NST= 53, Nph= 53, Dmin=329.5 km, Rmss=0.97 sec, Gp=173°,
M-type=body wave magnitude (Mb), Version=5
Source
Magnitude: USGS NEIC (WDCS-D)
Location: USGS NEIC (WDCS-D)
Event ID
usc0006xb8t

Now would the 6.1 in Japan today be considered an aftershock of one of the bigger ones of late?

Because i have not seen any aftershocks in that area......But then again, I have not looked any where else but U.S.G.S.

Maybe that is my whole problemo!

Originally posted by radpetey
Now would the 6.1 in Japan today be considered an aftershock of one of the bigger ones of late?

Well considering the depth of 37 km and location, it's probably an aftershock of the 9.1 still. Heck, anything that big in that general 9.1 area will be considered aftershocks for years. Although the close proximity to the other plate zones could complicate things if a big one occurred on its own right on one of those boundaries.

Because i have not seen any aftershocks in that area......But then again, I have not looked any where else but U.S.G.S.

Maybe that is my whole problemo!

To me there's no question that to get a fully accurate picture of all the seismicity in Japan, especially below 4.4, watching the JMA's reports in addition is key. But that can be tedious, cause there's a lot of smaller quakes happening all the time.

Originally posted by radpetey
Now would the 6.1 in Japan today be considered an aftershock of one of the bigger ones of late?

Because i have not seen any aftershocks in that area......But then again, I have not looked any where else but U.S.G.S.

Maybe that is my whole problemo!

We have daily ca. 8 to 10 Tremors in the range from Mag.1-3,5,
a few above Mag. 4 (ca. 6-8 in a Week)
but much, much less than shortly after 03/11,
that was really like going Off-Road in a SUV

big quake in front of hokkaido!

big

no tsunami , mag.6,1

reply to post by TrueAmerican


Another Hokkaido just gone off

Only on EMSC so far as a 6.1

www.emsc-csem.org...

Darn I am too quick. It dropped to 5.9 as I scraped!

Magnitude mb 5.9
Region HOKKAIDO, JAPAN REGION
Date time 2011-11-24 10:25:36.0 UTC
Location 41.86 N ; 142.70 E
Depth 60 km
Distances 125 km S Obihiro (pop 173,890 ; local time 19:25:36.6 2011-11-24)
59 km SE Shizunai (pop 22,436 ; local time 19:25:36.6 2011-11-24)
Global view
Source parameters not yet reviewed by a seismologist

But this is Mb so it will go up when Mw kicks in with USGS.

There you go 6.2 Mw with USGS

earthquake.usgs.gov...

Magnitude 6.2
Date-Time

Thursday, November 24, 2011 at 10:25:34 UTC
Thursday, November 24, 2011 at 07:25:34 PM at epicenter

Location 41.877°N, 142.710°E
Depth 42.3 km (26.3 miles)
Region HOKKAIDO, JAPAN REGION
Distances

164 km (102 miles) E (85°) from Hakodate, Hokkaido, Japan
174 km (108 miles) SE (140°) from Sapporo, Hokkaido, Japan
184 km (114 miles) NNE (33°) from Hachinohe, Honshu, Japan
737 km (458 miles) NNE (19°) from TOKYO, Japan

Location Uncertainty horizontal +/- 12.3 km (7.6 miles); depth +/- 6.6 km (4.1 miles)
Parameters NST=419, Nph=427, Dmin=40.1 km, Rmss=0.73 sec, Gp= 29°,
M-type=teleseismic moment magnitude (Mw), Version=8
Source

Magnitude: USGS NEIC (WDCS-D)
Location: USGS NEIC (WDCS-D)

Event ID usc0006xes

What I was about to say when the siren went off was:

USGS at it again raising magnitudes after 7 days have passed.;

neic.usgs.gov...

Magnitude 6.0
Date-Time Friday, November 11, 2011 at 10:41:39 (UTC) - Coordinated Universal Time
Friday, November 11, 2011 at 02:41:39 AM local time at epicenter
Time of Earthquake in other Time Zones
Location 55.83S 124.45W
Depth 10 kilometers
Region SOUTHERN EAST PACIFIC RISE
Distances 4751 km (2950 miles) SSE of PAPEETE, Tahiti, French Polynesia
Location Uncertainty Error estimate
Parameters Nst=39, Nph=39, Dmin=3445.8 km, Rmss=1.00 sec, Erho=23.1 km, Erzz=2.7 km, Gp=68.0 degrees
Source USGS NEIC (WDCS-D)
Event ID us2011tda9

This was a 5.9 on USGS, but EMSC have always had it at 6.0 Mw