The Daily Galaxy on MSN2 天
Earth’s Inner Core Is Rotating Backwards—and Scientists Are Finally Watching It Happen
Buried more than 3,000 miles beneath our feet, Earth’s solid inner core was once thought to be unchanging—locked in place at ...
BBC2 年
The Earth's structure and plate tectonics
The Earth is made up of different layers: Therefore, instead of tectonic plates moving because of the convection currents, evidence suggests it is the plates that drive the convection. Slab pull ...
The Daily Galaxy on MSN1 天
NASA Is Tracking a Massive Anomaly in Earth’s Magnetic Field — And It’s Getting Worse
A vast and evolving anomaly in Earth’s magnetic field, situated above South America and the southern Atlantic Ocean, ...
EurekAlert!8 天
High-precision full waveform inversion imaging and its applications
Full Waveform Inversion (FWI) is capable of finely characterizing the velocity structure, anisotropy, viscoelasticity, and attenuation properties of subsurface media, which provides critical ...
BBC2 年
Structure of the Earth
The Earth has a layered structure, including the core ... There are three types of seismic waves – P waves, S waves and surface waves. P waves are longitudinal waves, and their relative speed ...