Tanzania Quake Leaves 13 Dead, 200 Injured

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Discussion Overview

The discussion revolves around the recent earthquake in Tanzania, which registered a magnitude of 5.7 (later upgraded to 5.9) and resulted in 13 deaths and 200 injuries. Participants explore the geological context, historical seismic activity in the region, and implications of building codes in earthquake-prone areas.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • Some participants note the earthquake's magnitude was upgraded from 5.7 to 5.9 and discuss its location near Lake Victoria.
  • There is mention of the low population density in the immediate region of the epicenter, which may have mitigated the impact of the quake.
  • One participant shares their personal experience of being near a previous earthquake in Uganda and discusses the seismic waves they recorded.
  • Another participant highlights the unusual occurrence of earthquakes in regions like Peru, noting a recent quake there and expressing surprise at its inland location.
  • Concerns are raised about the lack of seismic engineering in building codes across Africa and other regions, which may contribute to higher fatalities during earthquakes.
  • Some participants discuss the geological activity of the Andes mountain range and its implications for seismic events in South America.
  • There are personal reflections on the beauty of Lake Victoria and its geological significance, with references to historical events in the region.

Areas of Agreement / Disagreement

Participants express multiple viewpoints regarding the implications of the earthquake, the geological context of the regions discussed, and the effectiveness of building codes in mitigating earthquake damage. No consensus is reached on the best approaches to address these issues.

Contextual Notes

Participants mention the historical seismic activity in various regions, but there are unresolved questions about the adequacy of building codes and the specific geological factors contributing to earthquake risks.

Who May Find This Useful

Readers interested in geology, earthquake engineering, and the socio-economic impacts of natural disasters may find this discussion relevant.

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1oldman2 said:
http://www.bbc.com/news/world-africa-37330418
13 dead 200 injured in 5.7 Tanzania quake, near lake Victoria.

Fortunately a very low population density area in the immediate region of the epicentre
I see it also got upgraded to a M 5.9. I recorded the tiniest burst of surface waves from it for ~ 10 minutes
I would have easily have felt that had it happened back in late April 2016, I was only 150km (95 miles) from the epicentre
whilst visiting Uganda
Dave
 
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I saw that yesterday, when it was listed as a 5.7 mag.

M5.9 - 23km ENE of Nsunga, Tanzania - near border with Uganda.
http://earthquake.usgs.gov/earthquakes/eventpage/us10006nkx#executive

Speaking of unusual or uncommon regions, there was also M6.0 - 51km N of Moyobamba, Peru
http://earthquake.usgs.gov/earthquakes/eventpage/us10006nkg#executive

and this morning - a M5.3 - 4km ENE of Skopje, Macedonia - right under Skopje and shallow.
http://earthquake.usgs.gov/earthquakes/eventpage/us10006nuj#executive
 
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Astronuc said:
there was also M6.0 - 51km N of Moyobamba, Peru
When I see Earthquake and Peru in the same sentence I always think of the coastal areas, I was surprised to see it so far inland. I noticed that area has a considerable history of quakes within the last 50 years.
Astronuc said:
and this morning - a M5.3 - 4km ENE of Skopje, Macedonia - right under Skopje and shallow.
I noticed the population of Skopje is over half a million, the surrounding area must be over a million easy, with the center so shallow this could have been much worse.
 
davenn said:
Fortunately a very low population density area in the immediate region of the epicentre
I see it also got upgraded to a M 5.9. I recorded the tiniest burst of surface waves from it for ~ 10 minutes
I would have easily have felt that had it happened back in late April 2016, I was only 150km (95 miles) from the epicentre
whilst visiting Uganda
Dave
Good thing the population was low in the area, looking at it on G Earth it doesn't look like there is much seismic engineering in the building codes. (Lake Victoria is a beautiful area, must be great to visit there.)
 
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1oldman2 said:
it doesn't look like there is much seismic engineering in the building codes.

yup, it's that way for most of Africa ( and other parts of the world -- pretty much all of south and central America and central Asia)
It is what accounts for the majority of the deaths, even from moderate events like this one
 
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1oldman2 said:
When I see Earthquake and Peru in the same sentence I always think of the coastal areas, I was surprised to see it so far inland. I noticed that area has a considerable history of quakes within the last 50 years.

Indeed, the Andes mountain range didn't get pushed up so high without 100's of 1000's of large and small quakes over millions of years
That whole western side of South America is very active as it is a mega-thrust subduction zone

I did get some surface waves from that Peru M6.0 for 10 - 20 minutes, nothing spectactular

Dave
 
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1oldman2 said:
Lake Victoria is a beautiful area, must be great to visit there

just as a little tease, this was the view of Lake Victoria from the hotel I stayed at in Entebbe

DSCF4293sm.jpg
 
davenn said:
just as a little tease, this was the view of Lake Victoria from the hotel I stayed at in Entebbe

View attachment 105782
Nice landscaping, that pic reminds me of the Santa Barbara, California area. Interesting geology in that area considering the lake is sandwiched between two rifts. (What a flashback to the days of Idi Amin)
 
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