KOBE EARTHQUAKE Flashcards
(39 cards)
Where is KOBE?
Southern side of the Japanese Island of Honshu. It lies on the N bshore of Osaka Bay, 30 km W of Osaka.
It is a Port Town.
What is the actual name of the earthquake even?
The Great Hanshin - Awaji Earthquake
When did the earthquake occur ?
17th Jan 1995
WHat was the nature of the quake?
Occured without warning, it was a mag 6.8 earthquake.
EPicenter was 20km from central part of the city and the focus was 16km below the ground.
How did the earthquake occur?
The epicenter was underneath Awaji island. Thhere was a sube terrenaean channel which was unkown to scientists that linked Awaji to a fualt directly beneath Kobe and so when pressure was released @ Awaji, it followed the channel and released pressure in form of an earthquake in KOBE, rupturing the fault line.
How many buildings were destroyed?
180k, –> there was widespread damage of the buildings and homes, mostly due to the inadequate housign structures
What natural hazards are Kobe expecting?
Typhoons, as seen by the typhoon proof homes,
What was the population of Kobe?
~1.5million
What was the population density of Kobe?
2,768/km2
What plate boudary type did the earthquake occur on?
Subductive plate boundary
The oceanic Philipene plate subducted under the Eurasian plate.
How many killed, injured and homeless?
6,000 killed
35,000 injured
250,000 homeless
What were the social impacts of the quake?
- 6k dead, 35k injured, 250k homeless.
- Those whos homes were destroyed faced financia RUIN —> only 3% of cities buildings were insured.
- 80% of victims were crushed to death by collapsed houses (“pancaking”, bc of the heacy tiled rooves that were not supported by the timber frames of the house).–> most casualties were in concentrated wooden houses w/ narrow lanes to trespass.
- Raised motorways collapsed during the shaking
- Fires broke out in residential areas –> exacerbated by wooden traditional houses —> Instantly killed lots of ppl.
What were some economic impats of the hazard?
Damage cost est : $100bn–> costliest urban disaster of its time (2.5% of Japan GDP).
The Dock Island subsidised meaning that losts of ppl lost jobs, and industriual output fell as then, it was the worlds biggest port city.
- only 3% of businesses or private households held earthquake insurance and only one-tenth to total damage could be fully recovered by insurance payments (Edgington 2009)
- $40bn oil trade loss due to 2 yrs major damage.
- Major decline in the Japanes stock market.
WHat were some political impacts ?
help from a national govt took almost 2 days to arrive
The mayor (Kazutoshi Sasayama ) was an urban planner before he was a polititian and tbus prioritised the urban renewal plan bc Kobe was too overcrowed, instead of trying to rescoue ppl out of rubble and housing –> left elederly to die etc.
Give some environmental impacts.
The center of Kobe was worst affected as the maj of buildings were built easily on center –> the land in the center beceame liquified, allowign buildigns to collapse and sink
FIres spread among traditional homes, resulted in pollution + release of toxins.
The earthquakes also broke water pipes leaving firefighters unable to fight quickly –> instead they had to pump water frm the rivers directly
Why is Japan so vulberable to such hazards (earthquakes) ?
- Its geographical location –> lies on a subduction plate where the Pacificplate subduct under the Eurasian plate.
- Most of pop is squeezed into 20% of the lowland if the whole Island of Kobe.
- Japanese cities are v v complex landscapes , have a mixed, multi-layerd infrastrcuture (ie roads and buildings).
- Japan is also made from lots of land that is acc reclaimed from the sea –> ie Kobe has advanced 15km seaward in the last 20yrs (reclaimed land is soft + wet –> allows shockwaves to carry on for long periods of time) -, ie whilst shaking on solid rock lasts 20s, on reclaimed land it takes 2-3 minutes.
How was KOBE specifically, not prepared for the earthquake?
Kobe are more prone to typhoon hazards than earthquake thus homes were built w/ to typhoon proof standards –> Typhoon proof homes thus collapsed easily as heavy tiles broke the timber frames –> killed alot of ppl
PPL were not aware of prepared for the quake –> it had last erupted 400yrs prior.
The cityventer sits 5km wide –>has densly poulated residential area to the E of it and ithas 160km of freestanding free wayG
Generally what was the Economic character of the community ?
Kobe was rich city, v v well developed and v v urbanissed. Most ppl had the expensive “Typhoon resistant homes” –> thus prepared for the wrong event.
Generally what was the Social character of the community ?
good education, strong senve of community and sense of place–> the ppl rejected the mayors plans to build high rise homes w/ more space around them as they preferrred the traditional typhoon homes –> felt the highrises were not “culteurally sensitve” and that they werenot “meaningful to theyr sense of place”
Generally what was the political character of the community ?
Democratic, very hazard conciouse.
How prepared was Kobe for the earthquake?
Japan is vv expereinced in manyearthquakes due to the geographical location along the major subduction zone whenre the philipine plate is subducted beneath the eurasian plate. It considers it self a countryw/ good preparations for the disaster sue to the vast amount of researchtheyd done into the earthquakes , however this wasnt enough to prepare Kobe for the quake as they did not expect the EQ and most ppl had not expereienced a Major quake in Kobe and thus thny ppl were not prepared (ie ppl running into streets when they should be under tables).
The vast amount of deaths were a result of the many houses having traditional style infrastructure (unbraced w/ timber pillars and heavy tiled roofs –> pancake collapse on ppl , killing them)–> meant to be TYPHOON prooof.
In what ways were Japan/Kobe prepared for the earthquake, ie why did they think they were prepared.
- Japan is also v v rich _ most tech advanced country in world –> before Kobe , was onsidered well prepared.
- Ppl at school + workplace practice fire drills and eq drills around 4x a year
- ## ppl are taught how to act in an earthquake.
What was the (political response) response ?WHat was the criticism from the financial times.
- took 2 days for national govt to respond –> The Financial Times claimed “politicians dithered over whether to call in the Self Defence Forces bc of the pacifict antipathy towards the military’’. → despite this , the survival rate of rescued ppl was 80.4% on the first day, + 1892 victims extricated w/ overall survival rate of 40%.
What was the political response? was it fast slow?
- ## Govt responded slowly and thus more lives could’ve beensaved if quicker as more ppl would be transported from hazard areas to hospitals.