Skip to main content
Regional secretary with the National Education Union
Deep sea sensing
The infrastructure of the internet relies on submarine optical fibre cables which can be exploited to investigate the oceans and what lies beneath them, write ROX MIDDLETON, LIAM SHAW and MIRIAM GAUNTLETT
World map of submarine communication cables as of July 2015 [Openstreetmap/CC]

EARTHQUAKES make seismic waves, which seismologists use to investigate the Earth’s inner structure. Seismic waves are typically recorded on seismometers, which are instruments placed in the ground that are sensitive to the shaking of the Earth after an earthquake happens.

If there are a lot of seismometers in a certain region, seismologists are able to calculate more accurate and precise models of the Earth’s inner structure beneath. 

For global models, the “resolution” of the model is a way to understand how accurate and precise it is; for regions with a lot of seismometers, the resolution is better.

Undersea seismometer made by the Seismological Research Institute of the University of Tokyo, on display at the National Science Museum of Japan, April 2019 [Pic: Theodore Xu/CC]
The 95th Anniversary Appeal
Support the Morning Star
You have reached the free limit.
Subscribe to continue reading.
Similar stories
The crowd at Manchester Punk Festival 2024
Culture / 11 April 2025
11 April 2025
Ben Cowles speaks with IAN ‘TREE’ ROBINSON and ANDY DAVIES, two of the string pullers behind the Manchester Punk Festival, ahead of its 10th year show later this month
Literature / 25 March 2025
25 March 2025
JESSICA WIDNER explores how the twin themes of violence and love run through the novels of South Korean Nobel prize-winner Han Kang
GUILTY PARTIES: Rembrandt Van Rijn (1606-1669), Syndics of t
Book Review / 4 February 2025
4 February 2025
CAROLINE FOWLER explains how the slave trade helped establish the ‘golden age’ of Dutch painting and where to find its hidden traces
ARROGANCE AND IGNORANCE: Group of six European men sitting,
Book Review / 24 September 2024
24 September 2024
FRANCOISE VERGES introduces a powerful new book that explores the damage done by colonial theft