Mag. 7 Indonesia Earthquake - 5th August 2018

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A magnitude 7 earthquake struck Lombok, Indonesia, on August 5, 2018, resulting in 39 fatalities and triggering a tsunami warning. The quake occurred at a depth of 15 kilometers, just a week after another quake in the region killed 16 people. The USGS later downgraded the magnitude to 6.9, highlighting a notable decrease in significant seismic activity this year compared to historical averages. Aftershocks continue to affect the area, including a recent 5.9 magnitude tremor. The region has faced significant destruction, with the earlier quake causing over 460 deaths and extensive damage.
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Thirty nine people have died after a powerful earthquake rocked the Indonesian tourist islands of Lombok and neighbouring Bali, triggering a tsunami warning just a week after another quake in the same region killed 16 people.

The magnitude seven earthquake hit about 6.46pm Jakarta time (11.46pm NZ) on Sunday, 27 kilometres north-east of northern Lombok in Indonesia at a 15-kilometre depth.

https://www.stuff.co.nz/world/asia/...and-indonesian-officials-say-tsunami-possible
 
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That's first M7 event since Feb 2018

The USGS have down graded it to 6.9

The count for M7.0 - 7.9 events this year is well down on the long term averages.
By now there should have been around 10 - 12 in that range there have been only 5 and they were all back in Jan and Feb.
18 / year is the long term avg.

M6.0 - 6.9 events are also well down compared to the averages. So far 49 for the year.
The annual avg is around 130

So far there hasn't been the M8+ event for the year eitherfrom my seismograph
http://www.sydneystormcity.com/seismograms.htm

zhi.gif


cheers
Dave
 

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I just got back last week from Bali. I've been messaging a lot of friends I made over there.
 
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Greg Bernhardt said:
I just got back last week from Bali. I've been messaging a lot of friends I made over there.
Everyone alright?
 
The aftershocks continue on Lombok Island.
As I am typing this the latest respectable ( and largest, so far) aftershock is tailing off.

M 5.9, 3km SE of Todo, Indonesia
2018-08-09 05:25:31 (UTC), 10.0 km deep

The red dot on the map


This is about 40km WSW of the M6.9 main shock

I have taken the USGS base map and added the event magnitudes to it...

upload_2018-8-9_16-14-46.png


apologies for the low quality image
the forum does a lot of compression

cheers
Dave
 

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davenn said:
it was only a 5.9 as stated above and in that article :smile:
Stuff must have updated the article to 5.9.
 
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Seismogram for the M 5.9 aftershock

180809 UT M 5.9 ashk Lombok eastern Indonesia zhi2.gif
 

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And again:
Lombok in Indonesia has been hit by another series of earthquakes - including a major 6.9 magnitude quake - which left one person dead and caused others to run out into the streets in panic.

The latest tremors arrived two weeks after a 7.0-magnitude earthquake killed 460 people on the island and caused damage worth more than 5 trillion rupiah (£268 million).
https://www.independent.co.uk/news/...-lombok-island-second-magnitude-a8498406.html
 
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