South Sudan Earthquake 1990-05-20, 5.121 N→ 32.145 E

By: Ruth Driscoll


  1. May 19th→ magnitude 7.5
  2. May 20th→ focusing on this one, 75 km away from the May 19th quake
  3. May 24th→ magnitude 7.1
  4. May 25th
  5. May 26th

Occurd in the South Sudan near the countries capital Juba. 1990-05-20, 5.121 N→ 32.145 E

Location of the earthquakes and other earthquakes that have occurred in South Sudan.

Earthquake I focus on occurred on May 20 1990--> there was an overall chain of earthquakes around this time. The first being on May 19th and the last being May 25th in the year 1990

Magnitude: 7.2

Depth: 14.9 km

Occured along divergent plate boundaries

Example of the type of boundary this earthquake was based on and the affects of this plate movement.

Recorded magnitude and epicenter from a seismograph in Oak Ridge Massachusetts.

Took 28 seconds for the P waves to arrive, 49 seconds for the s waves to arrive. Epicenter 160 km from the capital, Juba.

Aftermath: there was no loss of lives or destruction--> based on where there epicenters was allowed for there to not be any serous damage to populated areas where lives could have been loss and buildings could have been destroyed, its epicenter was in a rural part of South Sudan.

Other earthquakes: The chain of earthquakes that mine falls into had some damage but no lives loss. For the amount of earthquakes that occurred and the magnitudes they were at they all had a good epicenter which helped to contribute to minimal damage and loss.

Overall: No economic loss for my general May 20th earthquake nor any loss of lives in any of the earthquakes. Some money was needed to rebuild small things in a few other earthquakes that occurred in the chains of earthquakes within that week.


Very Rural

Population 5.74 million in the year 1990

Mainly Roman Catholic

Ecosystem: Tropical forests, swamps and grasslands.Climate:

Climate: Climate: Very hot and dry with minimal season rainfall→ wet season (heaviest up south)2 season→ Wet= april to november and dry, Hot and humid all year, Mainly Spring and summer time/wet season → April may and June

Geography Features: Landlocked country, Lots of rivers→ White Nile→ goes right through the the country and files into the swamps, Borders Sudan and Ethiopia, Imatong Mountains→ in southeast part, contains the highest point in the country- Mt. Kinyeti at 10,456, Major water sources→ Sudd Swamp Land, Bahr el Ghazal and Sobat river, The Sudd swamp land is considered the largest wetlands within the Nile Basin.


Sudan Earthquakes. Digital image. USGS. N.p., n.d. Web. 20 Feb. 2017. <>.

"Sudan Earthquake May 1990 UNDRO Information Reports 1-2." ReliefWeb. N.p., 29 May 1990. Web. 21 Feb. 2017. <http://reliefweb

Sudan Earthquake May 1990 UNDRO Information Reports 1-2." ReliefWeb. N.p., 29 May 1990. Web. 21 Feb. 2017. <>.

South Sudan Map. Digital image. Britannica. N.p., n.d. Web. 22 Feb. 2017. <>.’

"Africa/." World Atlas - Maps, Geography, Travel. N.p., 13 July 2016. Web. 23 Feb. 2017. <>.

Pike, John. "Military." South Sudan - Climate. N.p., n.d. Web. 22 Feb. 2017. <>.

"South Sudan Population (LIVE)." South Sudan Population (1990) - Worldometers. N.p., n.d. Web. 20 Feb. 2017. <>.

"M 7.2 - Sudan." M 7.2 - Sudan. N.p., n.d. Web. 20 Feb. 2017. <>.

"Sudan Earthquake May 1990 UNDRO Information Reports 1-2." ReliefWeb. N.p., 29 May 1990. Web. 21 Feb. 2017. <>.

"Wilber 3: Select Stations." IRIS: Wilber 3: Select Stations. N.p., n.d. Web. 23 Feb. 2017. <>.


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