Author Topic: Earthquake!!!  (Read 49028 times)

Offline JM

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Re: Earthquake!!!
« Reply #340 on: September 27, 2021, 01:12:53 PM »
Got the google alert 30 seconds before it hit NCR. For some reason I was looking at buildings collapsing on YT when the alert came. That didn't help at all....

Offline splerdu

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Re: Earthquake!!!
« Reply #341 on: September 27, 2021, 08:57:43 PM »
Ang haba nun! Medyo malakas din, kinabahan ako.

Some areas and/or specific building heights more affected it seems. Honestly it felt pretty weak for me, but a friend said the shaking was so strong it felt like magnitude 8 at their place. He went out to inspect his house at like 1:20am.
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Offline lahar

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Re: Earthquake!!!
« Reply #342 on: September 28, 2021, 06:58:10 AM »
Ang haba nun! Medyo malakas din, kinabahan ako.

Some areas and/or specific building heights more affected it seems. Honestly it felt pretty weak for me, but a friend said the shaking was so strong it felt like magnitude 8 at their place. He went out to inspect his house at like 1:20am.

It depends on the type of soil/rocks in your area. The shaking can be attenuated or increased. For civil engineers, you can download the Philippine Earthquake Model below, you just have to fill out the form for statistics purposes.

https://docs.google.com/forms/d/e/1FAIpQLSdIHg3AdCut47En_g_0uBNtu0XtqlbRD9VRerC1QnV-8KSmBg/viewform

Also the taller the building, the more intense the swaying/shaking, especially in the upper floors. Just like a vibrating stick, the opposite end moves stronger than the rest.


Offline splerdu

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Re: Earthquake!!!
« Reply #343 on: September 29, 2021, 12:49:52 PM »
I remember watching something before that said for buildings the effect can vary greatly depending on the relationship between the frequency/periodicity of the earthquake and the building's height.

I've probably linked it here or in one of the other earthquake threads but can't be bothered to dig right now.
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Offline JM

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Re: Earthquake!!!
« Reply #344 on: October 01, 2021, 11:31:51 AM »
Yeah structures will have their resting frequency. If the earthquake matches the structure then it could amplify the effect. Thats the reason why there are guidelines for soldiers not to march in cadence when crossing bridges etc.

Offline lahar

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Re: Earthquake!!!
« Reply #345 on: October 01, 2021, 12:40:00 PM »
I remember watching something before that said for buildings the effect can vary greatly depending on the relationship between the frequency/periodicity of the earthquake and the building's height.

I've probably linked it here or in one of the other earthquake threads but can't be bothered to dig right now.


https://www.youtube.com/watch?v=bIqV95gIf9o

Offline Sephiroth

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Re: Earthquake!!!
« Reply #346 on: October 04, 2021, 09:42:44 AM »
bakit parang daming lindol recently sa mindoro?

Offline lahar

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Re: Earthquake!!!
« Reply #347 on: October 04, 2021, 10:39:40 AM »

Offline splerdu

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Re: Earthquake!!!
« Reply #348 on: March 14, 2022, 05:08:46 AM »
 :o



Edit: https://twitter.com/phivolcs_dost/status/1503127179281907713

Quote
Earthquake Information No.2
Date and Time: 14 March 2022 - 05:05 AM
Magnitude = 6.4
Depth = 029 km
Location = 14.05N, 119.12E - 110 km N 79 W of Lubang (Occidental Mindoro)
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Offline wheelee

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Re: Earthquake!!!
« Reply #349 on: March 14, 2022, 10:12:57 AM »

Offline motion55

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Re: Earthquake!!!
« Reply #350 on: March 14, 2022, 12:01:50 PM »
HK had one today @2am daw, connected kaya sila?
https://www.hko.gov.hk/en/gts/equake/eqpress.htm?datetime=20220314.0316

Connected to what?

If you look at the map of recent detected earthquake of magnitude greater than 2.5+, some are far away from plate boundaries and known major fault lines. The one near HK is not unique. There are other slightly stronger ones much farther away. If you are looking for signs  then it's a sign that the Earth is still tectonically active. Once the Earth loses plate tectonics then it will be like Mars and Venus and we're in trouble.

https://earthquake.usgs.gov/earthquakes/map/?currentFeatureId=us6000h4c9&extent=-82.76537,-37.26563&extent=84.9901,570.23438
"Set your mind free!"

Offline lahar

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Re: Earthquake!!!
« Reply #351 on: March 14, 2022, 12:29:37 PM »
HK had one today @2am daw, connected kaya sila?
https://www.hko.gov.hk/en/gts/equake/eqpress.htm?datetime=20220314.0316

Malayo na. If it were in Taiwan, then yes.


Offline splerdu

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Re: Earthquake!!!
« Reply #353 on: May 22, 2022, 06:57:22 AM »
:o
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