" Dorian" hurricane. NNOA


Earth’s magnetic field is acting up and geologists don’t know why


Erratic motion of north magnetic pole forces experts to update model that aids global navigation.

Update, 9 January: The release of the World Magnetic Model has been postponed to 30 January due to the ongoing US government shutdown.

Something strange is going on at the top of the world. Earth’s north magnetic pole has been skittering away from Canada and towards Siberia, driven by liquid iron sloshing within the planet’s core. The magnetic pole is moving so quickly that it has forced the world’s geomagnetism experts into a rare move.

On 15 January, they are set to update the World Magnetic Model, which describes the planet’s magnetic field and underlies all modern navigation, from the systems that steer ships at sea to Google

Seguir leyendo

What is Sea Level?







There is an important distinction between the global sea level trend and relative sea level trends (based on local sea level measurements), which must be understood in order to interpret changes to a coastline or particular location, and to properly apply the information.

Tide stations measure Local Sea Level, which refers to the height of the water as measured along the coast relative to a specific point on land. Water level measurements at tide stations are referenced to stable vertical points (or bench marks) on the land and a known relationship is established. However, the measurements at any given tide station include both global sea level rise and vertical land motion, such as subsidence, glacial rebound, or

Seguir leyendo

Convenio OSPAR sobre la protección del medio ambiente marino del Atlántico Nordeste





Convenio OSPAR sobre la protección del medio ambiente marino del Atlántico Nordeste

El convenio sobre la protección del medio marino del Atlántico Nordeste, o convenio OSPAR, suscrito en París el 22 de septiembre de 1992, fue el resultado de refundir dos convenios anteriores: el convenio de Oslo para la prevención de la contaminación marina provocada por vertidos desde buques y aeronaves, y el convenio de París para la prevención de la contaminación marina de origen terrestre. Fue ratificado por España mediante instrumento de 25 de enero de 1994 (publicado en el BOE de 24 de junio de 1998).

El Convenio OSPAR entró en vigor en 1998, por lo que, a partir de esa fecha, su articulado es de obligado cumplimiento para las Partes

Seguir leyendo

Cambio climático