How to write high-scoring A-level & IB Geography essays

Volcanic hazards can have global effects too. In April 2010 E15 Volcano stratovolcano erupted, turning 270 million m3 of rock into volcanic dust (tephra) in the air. The volcano sits on the Mid-Atlantic Ridge, a creative plate margin. This subglacial eruption caused no direct casualties, but the interaction of magma and meltwater pulverised the rock into a fine, glass-rich ash cloud that drifted into European airspace. Volcanic ash melts inside jet engines and can cause engine failure. This led to aviation authorities shutting down the airspace across northern Europe for up to eight days. The eruption is estimated to have cost the global airline industry approximately $1.7 billion USD. Globally, the total economic loss reached roughly $5 billion USD due to the disruption of supply chains, stranded passengers and perishables. Showing how eruptions can negatively impact a highly interconnected global economy.

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🏆 Tutor Note: This section scores highly because it synoptically addresses the spatial and scale element of  socio-economic impact  of an eruption (how a local eruption can 'butterfly effect' across space, site and scale.

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Volcanoes also offer long-term socio-economic benefits, explaining why over 800 million people worldwide continue to live within active volcanic zones. The primary reason is highly fertile agricultural land associated with volcanic tephra, lava, and mineral-rich mud, which weather down to form deep, highly fertile soils known as andisols, which are enriched with essential nutrients for arable crop growth. Java, Indonesia, has 34 active volcanoes, including Mount Merapi. Eruptions have created highly fertile soils enabling farmers to practice intensive, multi-harvest terrace farming. This yields up to three rice crops per year, without needing expensive artificial fertilisers. This exceptional agricultural land supports one of the highest rural population densities on Earth, and underpins the rest of the economy, demonstrating a clear economic incentive that outweighs the episodic threat of eruptions.

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Geothermal energy, associated with volcanic activity, allows some countries to secure energy independence and develop industrially. Iceland taps into shallow magma chambers and superheated groundwater associated with its tectonic Mid-Atlantic Ridge. This generates approximately 29% of its total electricity from geothermal power plants and provides heating for 90% of all Icelandic homes. It is a clean and renewable energy source, reduces reliance on fossil fuels to 15%, and contributes up to 7% of Iceland's GDP. The Blue Lagoon thermal spa also attracts millions of international visitors annually, providing a boost for national tourism.

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🏆 Tutor note: This PEEL (Point, Evidence, Explanation, Link) paragraph has a clear Point about volcanic activity driving energy independence and industrial growth, then backed by precise, data-driven Evidence of Iceland’s geothermal energy usage. The paragraph then Explains the economic and environmental benefits, Linking back to the core concept of national development by concluding with the added boost to Iceland’s international tourism.

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Conclusion

This is where you bring everything together synoptically to conclude your essay, tying in the spatial, site and scale with specific reference to the importance of relative development in this type of question

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In conclusion, volcanoes can have opposing socio-economic impacts. Short-term, eruptions on Montserrat and Iceland presented severe risks to local infrastructure and global communication links and supply chains. Alternatively, if the risk is managed correctly, volcanic areas can be valuable economic assets. Highly fertile soils of Java and the geothermal energy of Iceland prove that volcanic systems can act as critical foundations for long-term food security, green energy independence, and sustainable development. However, factors such as spatial variations and level of economic development will have impacts on the ability of a country or local area to either prepare for and/or manage the aftermath of volcanic eruptions, such as early warning systems or available capital to exploit geothermal resources.

 

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