Quake Watch 2011

Originally posted by OneAndCreakily
Now that I think about it, it could have been the beginning of a sinkhole...

The walls were rumbling in an odd way, but my bed didn't start shaking until after all the noise died down. So maybe it wasn't an earthquake after all...

Bet you didnt get much sleep

reply to post by PuterMan


never clicked that, but theres not much on there anyway, I was looking for their database.
maybe you have to set the date yourself on the map , I had one up from 2000-2011

reply to post by diamondsmith

yeah California is overdue ( a cliche I know )
been 3 years since the last Mag 5 on land, thats a long time between 5's
earthquake.usgs.gov...

Nice section of the site. ^^ It looks like the earthquake off the coast here in 1812 was a 7.1 instead of a 7.9.

been doing some research to compile Timeline Aftershock graphs for significant global events and used one off the USGS web site called SISRA to get data for Chile 1960.
Wondering what SISRA stands for I found this page, explains the databases USGS uses.
earthquake.usgs.gov...
this was interesting

PDE Preliminary Determinations of Epicenters, Monthly Listing. This list is the most complete computation of hypocenters and magnitudes done by the USGS NEIC. It is normally produced a few months after the events occur. The publication is called "Preliminary" because the "final" computation of hypocenters for the world is considered to be the Bulletin of the International Seismological Centre (ISC), which is produced about two years after the earthquakes occur.
The NEIC PDE program contributes about one-third off all data used by the ISC.

so here is the BIG BOSS
ISC search

So Japan 2011 will still be "preliminary" 9.0 or 9.1 depending on where you read it for another 13 months

what a quandary now, I did a search of 1960 using ISC and found two "new" Mag 7+ quakes that I didn't have before, in Iran

ISC Event ID 879954
Prime hypocentre
ISS 1960-08-01 02:20:50
lat: 28.1200 lon: 54.3800 depth: 62
Distinct stations: 212
Mag
MOS 5.5
EHB
CGS
QUE 7.0

and

ISC Event ID 878868
Prime hypocentre
ISS 1960-04-24 12:14:27
lat: 27.7100 lon: 54.4300 depth: 0
Distinct stations: 365
Mag
CGS
MOS
SHL
TEH
EHB
QUE 7.1

QUE is Geophysical Centre, Pakistan Meteorological Department, Quetta, Pakistan
MOS is Geophysical Survey of Russian Academy of Sciences, Russia (which I call RAS)

do I have to go back and restart (recheck) the Global 7+ Project for the 2nd time?, Centennial List not the end all of catalogues by the look of it now

I think that parts of LA and San Francisco should get extremely reinforced, depending upon suspicion of where the fault will produce the most damage. Clearly we're looking at a window of about several more years or next week, but either way it's unavoidable from what the world seems to believe. California has a higher population than all of Canada the last I checked. I haven't really heard of any developments, but they should have a Japan-like or Japan-based system going very soon, at the least.

I think a lot of people feel that CA will have it's own Japan quake, though probably not as a big, hopefully not as big. I can't imagine the same situation thrown at Japan put in reverse and given to the western NA, but that's what people should be aware, with the most preparedness possible to alleviate the anxiety.

Is this quake weird?

Mag - 4.9
Date-Time

Sunday, November 27, 2011 at 10:14:11 UTC
Sunday, November 27, 2011 at 06:14:11 PM at epicenter
Time of Earthquake in other Time Zones

Location 45.439°N, 99.228°E
Depth 14.2 km (8.8 miles)
Region CENTRAL MONGOLIA
Distances 86 km (53 miles) NNE of Bayan-Ondor, Mongolia
283 km (175 miles) SW of Tsetserleg, Mongolia
314 km (195 miles) SE of Uliastay, Mongolia
649 km (403 miles) WSW of ULAANBAATAR, Mongolia
Location Uncertainty horizontal +/- 17.8 km (11.1 miles); depth +/- 6.2 km (3.9 miles)
Parameters NST=107, Nph=114, Dmin=612.3 km, Rmss=0.84 sec, Gp= 97°,
M-type=body wave magnitude (Mb), Version=6
Source

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

Event ID usc0006ygr

Comes after the two days with only 5 quakes in the east.. Wheres all the energy going?

Hm?

Magnitude 4.4 - NEAR THE SOUTH COAST OF HONSHU, JAPAN
2011 November 27 11:19:09 UTC

This event has been reviewed by a seismologist.

Location
33.618°N, 137.041°E
Depth
355 km (220.6 miles)

130 km (80 miles) SSE of Tsu, Honshu, Japan
135 km (83 miles) SSW of Hamamatsu, Honshu, Japan
172 km (106 miles) S of Nagoya, Honshu, Japan
337 km (209 miles) SW of TOKYO, Japan

reply to post by muzzy

do I have to go back and restart (recheck) the Global 7+ Project for the 2nd time?, Centennial List not the end all of catalogues by the look of it now

Basically no. The Centennial is an accepted catalogue. You also have to be careful about chasing magnitudes. There are many different determinations of magnitudes as you are well aware and the PDE (used in the circular search) is not any different in that respect.

All I got from that was

No events were found.

International Seismological Centre
Pipers Lane, Thatcham, Berkshire
United Kingdom RG19 4NS

That was using Mw, and using Any for the magnitude I could find not one of the ones you said, nor could I find the Chile Earthquake or basically any over about 6. You will have to let us in on the secret for the parameters.

The ISC's Internet link is limited to 56 kbit/s, so it is not possible to provide extremely large quantities of data from the web site. To avoid overloading either our Internet link or our database server, we currently respond only to queries that return fewer than 6,400 events without phase data

Well that is a load of outdated K-rap then! Never heard of broadband?

In fact here is my search. See what I get for 1960.

That is for 01/01/1960 00 to 31/12/1960 23 for any lat/lon/depth for any mag type, any agency and between 0 and 10 mag.

The results are just rubbish!

reply to post by PuterMan


something you entered must have skewed the results

Here are the parameters I put in
Bulletin type PUBLISHED
format IMS1.0
1960/01/01 01 to 1960/12/31 01
lat long blank
depth blank
any magnitude type
magnitude 7.0 to blank

resulting return

The result I get is 23 events, 5 "new" ones I didn't have.
I haven't cross checked the Chile ones yet but here are the differences just by eyeballing the 2 lists

Event 877999 Near coast of Peru
Event 878016 Near coast of Peru
Event 878240 Seram
Event 878481 Vanuatu Islands
Event 878564 Off east coast of Honshu
Event 878868 Southern Iran
Event 879106 Near coast of central Chile
Event 879128 Central Chile
Event 879134 Central Chile
Event 879135 Central Chile
Event 879136 Central Chile
Event 879416 Southern Chile
Event 879577 Central Chile
Event 879701 Andreanof Islands
Event 879902 Near east coast of Kamchatka Peninsula
Event 879954 Southern Iran
Event 880492 North Korea
Event 880643 Kamchatka Peninsula
Event 880670 Off coast of central Chile
Event 880759 Fox Islands
Event 880846 South of Fiji Islands
Event 880912 Mongolia
Event 880984 Macquarie Island region

Off my list
22 events

8 Ms, 1960/1/13 15:40:29.85, W of Rata, Arequipa, Peru, ehb
7 Ms, 1960/1/15 9:30:24.21, SW of Poroma, Nazca, Peru, ehb
7.2 Ms, 1960/3/8 16:33:41.37, o/s E of Ile Tongariki, New Hebrides Islands (Vanuatu), ehb
7.8 Mw, 1960/3/20 17:7:29.11, o/s E of Iwate, Honshu, Japan, ehb
8.2 Mw, 1960/5/21 10:2:57.7, SW of Curanilahue, Bio Bio, Chile, ehb
7.3 Ms, 1960/5/22 10:32:49.66, W of Contulmo, Bio Bio, Chile, ehb
7.9 Mw, 1960/5/22 18:56:4.03, N of Capitan Pastene, Araucania, Chile, ehb
9.6 Mw, 1960/5/22 19:11:17.75, o/s W of De Los Rios, Chile, ehb (location by noaa)
7.2 Mw, 1960/6/6 5:55:50.11, Estero Quitralco, Aisen, Chile, ehb
7 Ms, 1960/6/19 22:1:, o/s SW of Canate, Bio Bio, Chile, dgfudc
7.3 mB, 1960/6/20 2:1:13.91, S of Lago Gueulieu, Bio Bio, Chile, ehb
7.1 Mw, 1960/6/20 12:59:46.04, o/s W of Tolten, Araucania, Chile, ehb
7.2 mB, 1960/7/25 11:12:9.33, W of Dzenzursky volcano, Kamchatka, USSR (Russia), ehb
7.1 mB, 1960/8/13 14:14:59.31, o/s W of De Los Rios, Chile, ehb
7 Ms, 1960/10/28 13:18:19.8, NW of Khodutka volcano, Kamchatka, USSR (Russia), ehb
7.2 Ms, 1960/11/1 8:46:1.08, o/s Araucania, Chile, ehb
7.1 mB, 1960/11/13 9:20:35.91, Aluetian Trench, S of Umnak Island, Alaska, USA, ehb
7.8 Mw, 1960/11/20 22:2:2.13, o/s W of Cartagena, Lambayeque, Peru, ehb
7.1 Ms, 1960/11/24 6:52:47.26, Tonga Ridge, NE of Manowai seamount, ehb
7.2 Mw, 1960/12/2 9:10:43.44,SE of Cerro Amazones, Antofagasta, Chile, ehb
7 Ms, 1960/12/3 4:24:17.65,SE of Khurmen, Mongolia, ehb
7.2 Mw, 1960/12/13 7:36:20.37, McDougall Trough, SW of the Auckland Islands, NZ, ehb

based on the time, the "bigun" is listed on ISC as Event 879135
Magnitude Err Nsta Author OrigID
8.3 PAS 1906800

I put the 4 versions of co-ordinates into Google Earth along with my KMZ file and the locations are all over the place, ehb has it on land, whereas Coast and Geodetic Survey of the United States (CGS) has it pretty close to where I had it located by NOAA

Re the 2 Iranian ones and the North Korea,
QUE (Pakistan Geological Survey) can't be ignored as they are a neighbouring country
MAT (the 7 listing for the Korean one) is Matsushiro, Japan, which is plausable, well enough for ISC to use it along with 6.5 and 6.5 PAS and BRK

for the purposes of the "7+ Project" anything that is listed as a 7 gets in, regardless of magnitude type.
On the map popups the other networks readings are included even if they are below 7.

the whole thing is quite complex

I already have ISC listed as a source on my 7+ Project, I think from memory Utsu grabbed those to include in his project, but it seems using the ISC site itself brings up more borderline events and as can be seen from this current 1960 search result, if it looks, smells and feels like a 7 then they put it in, even if only one station got it at Mag 7.
My project is more about presenting the information in a more user friendly format (maps and graphs) than a bunch of lists, but I do want to be accurate with the data.

FWIW this ISC membership list contains quite a few sources of earthquake info (links) I didn't have

eg Geological Survey Dept of Republic of Cyprus
and NRIAG (Egypt)

more the smaller quakes, obviously the main networks catch anything in the 4+ range ( usually)


hey if others here are posting mag 2's in OK or CA why not post

Event 20111127-10
Time: 2011-11-27 13:34:02.9600
Position: 29.8988°N, 36.7703°E
Place: 69 km from Al Jafr, Ma’an, Jordan
Major Place:
Depth: 9.97 km
Magnitude: 3.5 Ml

and
the Egyptian site is more up to date with events in Jordan than the actual Jordania n earthquake web site

First bit of notable activity on a larger scale.

PUERTO RICO REGION
2011 November 28 04:56:20 UTC
Earthquake Details

This event has been reviewed by a seismologist.
Magnitude
4.9

Location
19.042°N, 66.812°W
Depth
20.2 km (12.6 miles) (poorly constrained)
Region
PUERTO RICO REGION
Distances
63 km (39 miles) N of Arecibo, Puerto Rico
94 km (58 miles) NW of SAN JUAN, Puerto Rico

SAINT MARTIN REGION, LEEWARD ISLANDS
2011 November 28 05:42:52 UTC
Earthquake Details

This event has been reviewed by a seismologist.

Magnitude
4.7

Location
17.996°N, 62.538°W
Depth
24.9 km (15.5 miles) (poorly constrained)
Region
SAINT MARTIN REGION, LEEWARD ISLANDS
Distances
52 km (32 miles) E of Philipsburg, Sint Maarten, Neth. Ant.
57 km (35 miles) E of Marigot, Saint-Martin, Guadeloupe

Bigger quakes in the Haiti/San Juan area this evening.

further to post by muzzy

not happy with that graph, so done one by the month
Sumatra 4 months aftershocks graph
interesting how there were surges exactly at 30 days 90 days afterwards, but no the dates don't coincide with any lunar phases Lunar Phase Calculator

been a wet and windy quiet day here

I've decided to keep these and add more as time allows
AftershockTimelineGraphs

Originally posted by muzzy
not happy with that graph, so done one by the month
Sumatra 4 months aftershocks graph

Thanks for that muzzy. From your chart there, it appears to me the 9.1 and 8.6 may have been two separate events in Sumatra, each complete with its own set of aftershocks which decrease in magnitude and frequency over time. Did the 9.1 trigger the 8.6? That is the question.

This just in, Bali Sea, 5.8M USGS reviewed. EMSC 5.8, not reviewed.

Magnitude
5.8
Date-Time
Monday, November 28, 2011 at 09:13:10 UTC
Monday, November 28, 2011 at 05:13:10 PM at epicenter
Location
7.005°S, 116.997°E
Depth
613 km (380.9 miles)
Region
BALI SEA
Distances
251 km (156 miles) NW (310°) from Raba, Sumbawa, Indonesia
268 km (167 miles) NE (47°) from Denpasar, Bali, Indonesia
287 km (178 miles) NNE (20°) from Mataram, Lombok, Indonesia
962 km (598 miles) W (280°) from DILI, East Timor

Chance for big tsunami in eastern Japan within 30 yrs revised up to 30%

TOKYO (Kyodo) -- The probability of a major earthquake occurring and triggering a massive tsunami in the Pacific Ocean off eastern and northeastern Japan within the next 30 years has been revised up to 30 percent from 20 percent, a government panel said Friday.

The Earthquake Research Committee has reexamined its long-term estimate of killer temblors after the March 11 quake and tsunami and found that a quake that triggers a tsunami as powerful as the one caused by the 1896 Meiji-Sanriku Earthquake, which killed more than 20,000 people, is more likely to happen in the sea zone stretching 800 kilometers north-south.

mdn.mainichi.jp...

They try to build big Shelters now, massive Structures who can stand this huge kinetic Energy
from the Tsunami Wave!

At 03/11 a few Tsunami-Shelters got washed away, incl. this poor People inside,
mostly old People and very young Students

reply to post by Human0815


30 years seems pretty generous to me.

double post

Peurto Rico just had another larger quake, a 4.6, on top of a 4.9, 4.7 and several smaller quakes from throughout the morning. 4.6 is waiting to be revised in the next 15 minutes. Lots going on there.

And now a 5.1 in Puerto Rico

61 km (38 miles) N (1°) from Hatillo, PR
62 km (38 miles) N (358°) from Carrizales, PR
62 km (38 miles) N (4°) from Camuy, PR
94 km (59 miles) NW (311°) from SAN JUAN, Puerto Rico


earthquake.usgs.gov...