Longer-term planning for earthquakes

Longer-term planning describes the actions taken months to years (sometimes decades) after an earthquake to rebuild communities and reduce future hazard risk [1 mark]. It includes reconstruction (Build Back Better), updated building codes, economic recovery, hazard education, insurance schemes, and policy reform [1 mark].

'Build Back Better' is a UN-promoted principle that reconstruction after a disaster should not simply replace what was lost, but should REDUCE future risk through stronger design and smarter planning [1 mark].

In practice it means rebuilding with stronger building codes, relocating away from high-risk areas, and integrating disaster risk reduction into all reconstruction [1 mark].

Example: after the 2011 Tōhoku earthquake + tsunami, Japan relocated many coastal villages to higher ground and built 14-m seawalls along approximately 400 km of the Tōhoku coastline — far stronger than the original defences [1 mark].

Japan's longer-term planning after the 2011 Tōhoku earthquake (Mw 9.1) was the largest peacetime reconstruction in Japanese history, with a total cost of approximately $235 billion.

Reconstruction (Build Back Better). Coastal villages were relocated to higher ground; 14-m seawalls were built along ~400 km of the Tōhoku coast — far higher than the pre-2011 defences [1 mark].

Nuclear policy reform. Following the Fukushima Daiichi meltdown, all ~50 Japanese nuclear reactors were shut down for safety review. A new independent Nuclear Regulation Authority was created in 2012, with stricter standards on tsunami protection and emergency power; only ~10 reactors had restarted by 2020 [1 mark].

Building code review. Existing 1981 codes were reviewed and updated; tsunami-resistant design was integrated into coastal building codes for new construction [1 mark].

Hazard education and memorialisation. Tsunami memorial parks and museums were built (Sendai, Rikuzentakata); school curricula were updated; annual commemorations and drills are now held on 11 March [1 mark].

Japan's reconstruction shows what a wealthy, prepared country can achieve — but progress has not been uniform, with some coastal areas still depopulated a decade later.

Haiti's longer-term planning after the 2010 earthquake (Mw 7.0, ~230,000 deaths) was slow, externally dependent and undermined by cascading crises.

Slow reconstruction. Despite ~$13.5 billion pledged internationally, less than 50% was disbursed in the first year; even five years later, ~80,000 people were still in temporary shelter, and a decade on, full reconstruction was incomplete [1 mark].

Building code reform. A new national building code was introduced in 2013 with US + UN technical support, but enforcement remained weak — particularly in informal settlements where most construction continued without inspection [1 mark].

International governance role. The UN Stabilization Mission in Haiti (MINUSTAH) continued until 2017; reconstruction was heavily led by NGOs (over 10,000 active in Haiti), which caused coordination problems + duplication [1 mark].

Cascading crises. A UN-introduced cholera outbreak (October 2010 onwards) killed over 9,000 and sickened approximately 800,000; Hurricane Matthew (2016) caused ~$2 billion further damage, setting back recovery. Political instability further slowed progress [1 mark].

Haiti's experience illustrates that without enforced governance and domestic capacity, even very large international pledges struggle to translate into resilient reconstruction.

Chile's response to the 2010 Maule earthquake (Mw 8.8, ~525 deaths, ~$30 billion damage) is widely cited as a model for an emerging-economy reconstruction.

Reconstruction speed. Chile rebuilt rapidly: approximately 220,000 homes within 4 years; a $30 billion reconstruction budget mostly self-funded by the government and private insurance; this was one of the fastest large-earthquake recoveries in modern history [1 mark].

Tsunami warning reform (SHOA). The Servicio Hidrográfico y Oceanográfico de la Armada (SHOA) failed to issue tsunami warnings in time in 2010 (contributing to ~200 tsunami deaths). The service was completely restructured, with a new National Tsunami Warning Centre, automatic warning protocols, and tsunami evacuation drills + signage in coastal cities [1 mark].

Building code update. Chile already had strict codes from 1985 (post-Valparaíso earthquake) — these performed well, with only ~525 deaths from an M8.8 quake. Codes were further updated with performance-based design + tsunami load requirements for coastal structures [1 mark].

Insurance + risk financing. Chile's high earthquake-insurance penetration (~80% for mortgaged homes) sped up reconstruction; private insurance covered ~$8 billion of the ~$30 billion total [1 mark].

Global model. Chile's reconstruction has been studied and adopted by other countries; international workshops + IADB (Inter-American Development Bank) studies cite Chile as a model for emerging-economy resilience [1 mark].

Assessment. Chile demonstrates that an emerging country can rebuild quickly and effectively if (a) building codes are enforced, (b) insurance penetration is high, and (c) government has the capacity and political will. The 2010 M8.8 earthquake released ~700× the energy of Haiti's M7.0 but killed ~440× fewer people — preparation and reconstruction capacity, not magnitude, decide outcomes [1 mark].

'Build Back Better' (BBB) is a UN-promoted principle that post-disaster reconstruction should reduce future risk rather than simply replace what was lost. Its effectiveness depends on funding, governance and political will.

Where BBB has worked well. Japan's post-Tōhoku reconstruction (~$235 billion) relocated coastal villages to higher ground and built 14-m seawalls along ~400 km of coast — clearly reducing future tsunami risk. Chile's reconstruction after the 2010 Maule earthquake updated codes with performance-based design and tsunami load requirements, supported by ~80% insurance penetration. These cases show that BBB delivers when funding + governance are strong [2 marks].

Where BBB has been limited. Haiti's reconstruction was slow and uneven — a new building code (2013) was introduced but weakly enforced in informal settlements; many buildings were rebuilt in the same vulnerable locations. Türkiye's 1999 post-İzmit code reform suffered from weak enforcement, contributing to the catastrophic 2023 Kahramanmaraş death toll (~60,000+). In both cases, the issue was not knowledge but ENFORCEMENT and CORRUPTION [2 marks].

Trade-offs and limits. BBB increases construction costs (base-isolated buildings cost 10–30% more; tsunami seawalls cost billions) and slows reconstruction — leaving displaced populations in temporary shelter longer. Some communities resist relocation away from ancestral land. The 'better' often serves elite urban areas more than rural or informal ones [1 mark].

Conclusion. BBB is highly effective WHERE there is strong governance, enforced codes, insurance penetration and self-funding capacity (Japan, Chile). It is less effective where governance is weak (Haiti) or corruption undermines enforcement (Türkiye 2023). Top-band policy combines BBB with capacity-building in governance and insurance — not just engineering [1 mark].

Longer-term planning after earthquakes varies enormously in effectiveness. Comparing Japan, Chile, Haiti and Türkiye reveals five key variables: funding, governance, code enforcement, insurance, and political stability.

Success — Japan post-Tōhoku 2011. Japan self-funded ~$235 billion of reconstruction over 5+ years; coastal villages were relocated; 14-m seawalls protect ~400 km of coast; the Nuclear Regulation Authority (2012) restored confidence in nuclear safety. Success drivers: vast domestic funding, strong institutions, enforced codes, public trust in government [2 marks].

Success — Chile post-Maule 2010. Chile rebuilt ~220,000 homes in 4 years with a ~$30 billion budget. Strong 1985 building codes were further updated; ~80$8 billion of private funds; the SHOA tsunami warning system was rebuilt. Chile is now cited globally as a model for emerging-economy reconstruction [2 marks].

Failure — Haiti post-2010. Despite ~$13.5 billion pledged internationally, less than 50$2 billion damage) further set back recovery. Failure drivers: weak governance, NGO over-dependency (>10,000 NGOs), political instability, no domestic insurance [2 marks].

Mixed — Türkiye post-İzmit 1999. Türkiye introduced an updated building code in 2000 + an earthquake tax for retrofitting. However, weak enforcement and 'construction amnesties' allowed non-compliant buildings to stand; the 2023 Kahramanmaraş earthquake (Mw 7.8) killed ~60,000+ and collapsed >160,000 buildings — many built after 2000. Türkiye had the technical knowledge but lacked enforcement. This shows that writing a code is not the same as enforcing it [2 marks].

Conclusion. Successful longer-term planning depends not on hazard magnitude but on (1) funding capacity, (2) governance + enforcement, (3) insurance penetration, (4) political stability and (5) freedom from cascading shocks. Japan + Chile succeeded because all five were strong; Haiti failed because all five were weak; Türkiye partially failed because (2) was weak despite the rest being adequate.

Earthquake death tolls have fluctuated through history — but globally they could fall dramatically over the next 50 years IF the right longer-term planning is scaled. The evidence is mixed.

Reasons to expect falling deaths.

(1) Improving building codes globally. Codes have improved substantially: Japan (1981, post-Kobe 1995 update), Chile (1985), USA (continuous updates), Türkiye (2000 post-İzmit). Chile demonstrates an emerging-economy code can keep deaths to ~525 from an M8.8 quake — vs Haiti's ~230,000 from a smaller M7.0. If codes spread + are enforced, deaths fall [2 marks].

(2) Cheap, scalable preparation works. Bangladesh's cyclone-preparedness model cut deaths ~99% (500,000 in 1970 → 26 in 2020) through cheap drills + shelters + warnings. Earthquake equivalents — drills, basic codes, EEWS apps (MyShake-style) — can be scaled to low-income countries at low cost [2 marks].

(3) Build Back Better is becoming default. UN Sendai Framework (2015-2030) makes BBB a global standard. Post-disaster reconstruction increasingly relocates + retrofits — Japan post-Tōhoku, Türkiye partially post-2023, Nepal post-Gorkha 2015 [1 mark].

(4) Technology is improving. EEWS, InSAR, GIS hazard mapping, MyShake-style smartphone alerts are spreading. AI + satellite data improve hazard forecasting + post-disaster damage assessment [1 mark].

Reasons to fear rising deaths.

(5) Urbanisation in high-risk zones. ~70% of world population will live in cities by 2050; many megacities (Istanbul, Tehran, Jakarta, Mexico City, Manila) sit on or near active faults. Dense informal settlements (~1 billion people) lack code enforcement. A single major earthquake in any of these could kill 100,000+ [2 marks].

(6) Climate change interaction. Sea-level rise amplifies tsunami impacts; permafrost thaw increases landslide risk after earthquakes. Cascading hazards (nuclear, dam failure, disease) become more likely [1 mark].

(7) Enforcement remains the bottleneck. Türkiye 2023 (M7.8, ~60,000+ dead) shows that even with updated codes, weak enforcement causes catastrophic loss. Haiti shows reconstruction without governance fails. Corruption + 'construction amnesties' continue in many high-risk countries [1 mark].

Judgement. Death tolls COULD fall dramatically if (a) cheap preparation scales like Bangladesh's cyclone model, (b) BBB becomes universal, (c) urbanisation is paired with enforced codes, and (d) governance gaps in informal settlements are closed. But without governance + enforcement reform, urbanisation in high-risk zones will counter all technical progress. The likely outcome: deaths in well-governed countries (Japan, Chile, USA) continue to fall; deaths in weakly governed urbanising countries (DR Congo, Yemen, Afghanistan, parts of South Asia) could rise. Global aggregate depends on which trend dominates — making governance reform the single biggest determinant of global earthquake deaths in 2070.