Quake Watch 2011

reply to post by MoorfNZ
I saw that on the USGS map and my heart started racing as the square looked a lot bigger on the thumbnail on the main page.

That's not an unusual site for a quake, how long has it been since one of comparable magnitude has occurred on this segment of the fault?

Originally posted by MoorfNZ
5.9 OFF OREGON

Distances

221 km (137 miles) W (280°) from Bandon, OR
225 km (140 miles) WNW (291°) from Port Orford, OR
226 km (140 miles) W (274°) from Barview, OR
303 km (188 miles) NW (309°) from Crescent City, CA
422 km (262 miles) WSW (238°) from Portland, OR

earthquake.usgs.gov...

edit on 12-10-2011 by MoorfNZ because: (no reason given)

I believe that quake to be smaller than a 5.9 after pulling both the seismic waveforms in GEE from TA network stations in Oregon, and also from the phase data of that quake here:
neic.usgs.gov...

Another one I will not be surprised to see cut way back in magnitude in the next hours or days. Waveforms and amplitude looked more like 4.9 to 5.3 to me. See you in seven days, Puterman.

ETA: And yup. USGS just downgraded the 5.9 to a 5.3. Oh well, at least we didn't have to wait seven days. Sorry, PM our date is cancelled.
earthquake.usgs.gov...

reply to post by TrueAmerican



As usual, TrueAmerican, you are correct

Revised to 5.3

earthquake.usgs.gov...

Wales makes another 'little' appearance
2011/10/12 23:49:59.3 53.073 -4.361 14 1.0 CAERNARFON BAY,N WALES 10KM SW OF CAERNARFO
2011/10/11 15:32:17.1 51.793 -3.140 20 1.4 BRYNMAWR,GWENT
www.earthquakes.bgs.ac.uk...
Rainbows
Jane

Originally posted by Robin Marks
Here's what I've observed the last few days over the lunar cycle regarding worldwide earthquakes.

As the moon entered its full moon phase, and as it reached apogee, things kinda stopped. The 11th was a moderate day, with nothing above 5.7M. Then yesterday, at the moon's peak, activity was very quiet. So, the moon did something. Which was cause nothing to happen. Because, nothing is something.


Then the maximum gravitational pull is reach. Things freeze. The activity starts after the gravity starts to let go. And what do we have. A 6+, followed by a sizable one off Oregon.

There is a lag to everything. For example the weather. In the North, the sun maximum is June. But that's not the hottest period. Because there's a lag. The effect doesn't happen at the "stroke of midnight".

I'm sorry. I'm not at my best. Listen to this radio program and maybe you'll be able to figure out what I'm trying to get at. Or it's the program on Jupiter. I don't know. It's in the archive somewhere. My point I mean.

www.sciencefriday.com...

Morning Mr Marks sir,
I am with you on the moon!
Your description made me think of a rubber band. Approaching a Full Moon, the rubber band gets stretched until it reaches it's full taughtness, then the day or so after PING the rubber band is released and sent hurtling towards the Earth. The strength of that 'energy' impact is determined by the size of the rubber band!
Just my way of looking at the moon's cyclical impact on Earth energies!
Rainbows
Jane

Originally posted by Robin Marks
reply to post by Olivine

 

I don't like commenting unless it's a particular network I'm watching. But, it looks like microseismic noise. Most probably from the hurricanes down in Mexico. Then again, some of them may be wind. At Yellowstone, some stations may not have wind, but others do. That's because it's mountainous and there are plains. You have updraft and wind corridors. So, even if there's only a slight breeze recorded by a weather station, there may be an area where there is gusts.

I was hoping Puterman or someone else would answer you first with a more technical explanation Regardless, I'm sure there not earthquakes or magma moving.

Thanks for your reply Robin. Yes, there are plenty of corridors for wind in the Klamath/Coast Ranges, lol. The topography looks like a crumpled piece of paper that one has tried to flatten back out.
I was leaning toward a small, slow creep of the Gorda plate -- but honestly, I had no clue.

Now that the M5.3 has hit on the north side of the Blanco fracture, maybe I was seeing something related?

Please pardon my ignorance.

But why is this Oregon quake void of aftershocks?

Originally posted by radpetey
Please pardon my ignorance.

But why is this Oregon quake void of aftershocks?

Yeah...why is it void of 'aftershocks'? Weird. But didn't we have something similar with another quake just last week......where are our teachers when we need them!
Rainbows
jane

That location off the coast in Oregon is quite an active area. Here you can look at the Historical Seismicity of the area.

Be Well.

Here's another one South of Indonesia:

Magnitude
4.5
Date-Time
Thursday, October 13, 2011 at 12:16:33 UTC
Thursday, October 13, 2011 at 08:16:33 PM at epicenter
Time of Earthquake in other Time Zones
Location
12.000°S, 119.883°E
Depth
10 km (6.2 miles)
Region
SOUTH OF SUMBA, INDONESIA
Distances
263 km (163 miles) S of Waingapu, Sumba, Indonesia
400 km (248 miles) SSW of Ende, Flores, Indonesia
412 km (256 miles) SSE of Bima, Sumbawa, Indonesia
730 km (453 miles) WSW of DILI, Timor-Leste
Location Uncertainty
horizontal +/- 18 km (11.2 miles); depth +/- 2.8 km (1.7 miles)
Parameters
NST= 38, Nph= 39, Dmin=453.1 km, Rmss=1.64 sec, Gp= 54°,
M-type=body wave magnitude (Mb), Version=4
Source
Magnitude: USGS NEIC (WDCS-D)
Location: USGS NEIC (WDCS-D)
Event ID
usc00068r4

Source: USGS

Be Well.

What's up with Greece?
Global Earthquakes

We have movement in Northern Peru:

Magnitude
5.3
Date-Time
Thursday, October 13, 2011 at 15:06:17 UTC
Thursday, October 13, 2011 at 10:06:17 AM at epicenter
Location
6.660°S, 75.424°W
Depth
22.8 km (14.2 miles)
Region
NORTHERN PERU
Distances
179 km (111 miles) ESE (112°) from Moyobamba, Peru
215 km (134 miles) NNW (333°) from Pucallpa, Peru
273 km (169 miles) E (101°) from Chachapoyas, Peru
631 km (392 miles) NNE (17°) from LIMA, Peru
Location Uncertainty
horizontal +/- 22.8 km (14.2 miles); depth +/- 9.5 km (5.9 miles)
Parameters
NST=175, Nph=175, Dmin=608.9 km, Rmss=0.85 sec, Gp= 97°,
M-type=body wave magnitude (Mb), Version=4
Source
Magnitude: USGS NEIC (WDCS-D)
Location: USGS NEIC (WDCS-D)
Event ID
usc00068t9

Source: USGS

Be Well.

Baja is shaking again:

Magnitude
4.4
Date-Time
Thursday, October 13, 2011 at 15:57:13 UTC
Thursday, October 13, 2011 at 08:57:13 AM at epicenter
Location
31.780°N, 116.073°W
Depth
6.8 km (4.2 miles)
Region
BAJA CALIFORNIA, MEXICO
Distances
47 km (30 miles) E (82°) from Maneadero, Baja California, Mexico
52 km (32 miles) NW (323°) from Lázaro Cárdenas, Baja California, Mexico
53 km (33 miles) E (101°) from Ensenada, Baja California, Mexico
122 km (76 miles) SE (133°) from Tijuana, Baja California, Mexico
Location Uncertainty
horizontal +/- 0.9 km (0.6 miles); depth +/- 3.9 km (2.4 miles)
Parameters
Nph= 27, Dmin=81 km, Rmss=0.37 sec, Gp=173°,
M-type=local magnitude (ML), Version=1
Source
California Integrated Seismic Net:
USGS Caltech CGS UCB UCSD UNR
Event ID
ci15062948

Source: USGS

It would appear that this plate is shifting quite a bit. First, Oregon and then Peru. Now right in the middle at Baja California. What's next?

And now followed, slightly shallower, at the same location with this:

Magnitude
2.6
Date-Time
Thursday, October 13, 2011 at 16:00:48 UTC
Thursday, October 13, 2011 at 09:00:48 AM at epicenter
Location
31.808°N, 116.006°W
Depth
6 km (3.7 miles) (poorly constrained)
Region
BAJA CALIFORNIA, MEXICO
Distances
51 km (32 miles) NNW (330°) from Lázaro Cárdenas, Baja California, Mexico
54 km (34 miles) E (79°) from Maneadero, Baja California, Mexico
58 km (36 miles) E (97°) from Ensenada, Baja California, Mexico
125 km (78 miles) SE (130°) from Tijuana, Baja California, Mexico
Location Uncertainty
horizontal +/- 0.6 km (0.4 miles); depth +/- 31.6 km (19.6 miles)
Parameters
Nph= 14, Dmin=63 km, Rmss=0.2 sec, Gp=130°,
M-type=local magnitude (ML), Version=2
Source
California Integrated Seismic Net:
USGS Caltech CGS UCB UCSD UNR
Event ID
ci10198050

Source: USGS

Be Well.

reply to post by Robin Marks

You may have a point Robin, I'll look into the lag theory a bit more in the coming rainy days, 2011 has been a hard year to analyse for New Zealand in particular, we have a Mag 4 just about every day so I'll have to just look at Mag 5's.
There does seem quite a few 5s that happened this year 3 days after one of the 4 moon phases, but there were also many that happened right in the middle of nothing.
Maybe someone else can see something that I can't in this graph I've been running all year.
NZ Timeline/Phases/EQs

reply to post by sageturkey


Nothing if you try zooming in and ignore the impossibly large dots the have for a 3.9!!

It just doing what that area does and did this time in 2010 and in May 2009.

reply to post by muzzy


Superb charts there muzzy

I have to say that as far as I can see there is no good correlation that can be determined as being anything other than random.

reply to post by angelchemuel

I am with you on the moon!

This explains much Dark side perhaps!

Whilst there appears to be no direct correlation I do have the feeling that such a large body - (the Moon ) - should have an effect.

WOW.........I still can not believe there has not been an aftershock off the Oregon coast.

Puterman!.........is this normal in your humble opinion?

reply to post by radpetey


What would no aftershocks
indicate? I have been silently
following this today.

reply to post by crazydaisy


A foreshock.

A picture of bigger, and not better things to come.