Can earthquakes be predicted?

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Sunday, March 10, 2013

Surprising statements of earthquake by USGS

hi
watch these surprising statements by none other than USGS

first a quake post by USGS

== PRELIMINARY EARTHQUAKE REPORT ==



Region: OFF THE COAST OF CENTRAL AMERICA
Geographic coordinates: 12.801N, 90.679W
Magnitude: 5.8
Depth: 17 km
Universal Time (UTC): 10 Mar 2013 10:18:17
Time near the Epicenter: 10 Mar 2013 04:18:17
Local standard time in your area: 10 Mar 2013 15:18:17

Location with respect to nearby cities:
125 km (77 mi) S of Puerto San Jose, Guatemala
127 km (78 mi) SW of Acajutla, El Salvador
144 km (89 mi) SW of Sonsonate, El Salvador
145 km (89 mi) SSW of Chiquimulilla, Guatemala
189 km (117 mi) WSW of San Salvador, El Salvador


AND

THE EVENT DELETED!!!!!!!!???

DELETED: Event us b000fi8j

== EVENT DELETED NOTIFICATION ==

***This event has been deleted after review by a seismologist.***

Geographic coordinates: 12.809N, 90.694W
Magnitude: 5.5
Universal Time (UTC): 10 Mar 2013 10:18:17
Time near the Epicenter: 10 Mar 2013 10:18:17

Location with respect to nearby cities:

Can anybody guess or explain how and why such things happen?

i have received both mail from USGS EXACTLY 1 hR AND 01 MINUTES APART

QUESTIONS ARE 
1)HOW AND WHY SUCH ERRORS OCCUR?
2)WHY DOES IT TAKES ONE HOUR TO RECOGNIZE THE ERROR?
3)FIRST THINK,HOW SUCH A BIG QUAKE OF 5.5+ CAN BE MISJUDGED?
4) IT IT IS A COMPUTER OR SOFTWARE ERROR ,HOW WE CAN TRUST SUCH SOFTWARE?
5)LAST BUT NOT LEAST
HOW CAN SEISMOLOGISTS IN GENERAL AND USGS IN PARTICULAR DEMANDS FROM
THOSE(LIKE ME )WORKING IN THE FIELD OF PREDICTION TO PREDICT EXACT MAGNITUDE(+ OR -0.3),THAT TOO BEFORE IT HAS OCCURRED?

I WOULD LIKE USGS AND /OR SEISMOLOGIST TO ANSWER THESE QUESTIONS

AMIT

6 comments:

Roger Hunter said...

Amit;

Preliminary locations are done by computer and the program is not as good as the human eye.

Once a person examines the records such mistakes are corrected.

Roger

AMIT said...

Roger
It is not only the quesrion of location.The complete event of 5.5 quake,seems to be deleted by USGS ,which is rare and surprising
Amit

Roger Hunter said...

Amit;

When an event is deleted entirely it was not a quake.

Seismometers record ground movement and that can be caused by many thing beside earthquakes.

Computers are not as good at recognizing patterns as humans. It's also possible that other stations did not record the event.

Roger

AMIT said...

Roger
My problem still remains
1) what else can move the ground to the tune of 5.5 magnitude?
Still surprising is ----the USGS Quaake details still shows the same quake,which is supposed to be deleted?!!!!

http://earthquake.usgs.gov/earthquakes/recenteqsww/Quakes/quakes_big.php

How come this anomaly?
Amit

Anonymous said...

1) what else can move the ground to the tune of 5.5 magnitude?

Ans- Haarp ;)

Jazzman

PuterMan said...

You asked what can move the ground to Mag 5.6, Answer nothing (or a nuke), but signal drop can make a seismometer trace THINK there is an event.

My post here explains some of the reasons why events can apparently occur and then be deleted.

The particular event you refer to has NOT been deleted. Whilst you can no longer see it on USGS you can still see it on EMSC and on GFZ Potsdam

Quite often USGS events get deleted and reinstated, especially if the change networks from pt (Pacific tsunami) to us - The main USGS network. You will then get a deletion on one and reinstatement on the other.