Natural Hazards

How Ancient Egyptian Decline Synced With Hydrological Change….And How They Survived

Simon Clark June 10, 2022

Fields of the Nile River. Credit: Katja Bigge via Imaggeo

Cairo’s survival was, is, and will be dependent on the flow of the Nile. Since the city was founded in 10th century CE the Nile’s scouring waters have left behind untouched ground onto which the city has spilled and grown. Modern Cairo’s youngest districts are closest to the Nile, founded on earth which was underwater centuries before. It is the river’s changing nature that made the Nile Val ...[Read More]

GeoPolicy: Climate solutions at the center of focus this Earth Day

Chloe Hill April 22, 2022

The Earth in a bubble symmetry. Credit: Nadia Malaspina via Imaggeo

Earlier this month, Climate Change 2022: Mitigation of Climate Change was published by the IPCC Working Group III as the third instalment of the IPCC’s Sixth Assessment Report (AR6). It emphasises that “rapid and deep” greenhouse gas emission reductions are needed across all sectors to have any chance of keeping the world below 1.5°C of warming above pre-industrial levels. However, it also outline ...[Read More]

What if a tsunami’s magnetic field could predict the height of the wave?

Gillian D'Souza January 12, 2022

Atmospheric gravity waves . Credit: Jorge Magalhaes and Jose da Silva (distributed via imaggeo.egu.eu)

It’s been well established that tsunamis generate magnetic fields as they move seawater (which is conductive unlike freshwater) through the Earth’s magnetic field. Although researchers previously predicted that the tsunami’s magnetic field would arrive before a change in sea level, they lacked the means to simultaneously measure magnetics and sea level to confirm this phenomenon. Now, a new study ...[Read More]

Imaggeo on Mondays: Magnetic interaction

Hazel Gibson October 11, 2021

Magnetic interaction . Credit: David Bernard (distributed via imaggeo.egu.eu).

Space weather is a ubiquitous, but little known, natural hazard. Though not as tangible as a volcanic eruption, storm or tsunami wave, space weather has the potenital to cause huge economic losses across the globe. In Europe alone, the interaction of solar wind with our planet’s magnetosphere, ionosphere and thermosphere, could lead to disrutions to space-based telecommunications, broadcasti ...[Read More]