A Fallen Rising Star – Eos

With the passing of a veteran scientist, we can afford ourselves the satisfaction of looking back upon a fruitful scientific career; one with a long record of success in expanding the boundaries of our collective knowledge. Losing a young colleague before they hit their stride is a double blow. We are left bereft […]

Modeling Earth’s Ever-Shifting Magnetism – Eos

On a day-to-day basis, most of us probably take for granted how much Earth’s deep inner workings affect some of modern life’s conveniences, like the relative ease with which we find our way from place to place by plane, boat, or automobile or on foot. Roughly 2,900 kilometers below the planet’s surface, convection […]

The Best of Eos in 2020

What a year. The world endured a pandemic, civil unrest, and turbulent elections. At Eos, we kept on covering the geoscience news that taught us more and more about the natural world we live in. We welcomed our first Spanish translations, new international contributors, and a growing readership hungry for science news. Our […]

New Volcano, Old Caldera – Eos

In May of 2018, a barrage of earthquakes struck Mayotte, the seismically quiet easternmost island of the Comoros archipelago, which stretches between Africa and Madagascar. After months of investigating the unexpected, intense seismic activity, French scientists discovered a new submarine volcano in the Indian Ocean approximately 50 kilometers east of the island. This […]

Stream Hydraulic Geometry 1.01 – Eos

Starting with the pioneering work by Leopold and Maddock in 1950s, it has been long empirically observed that channel bankfull width, mean depth, and mean velocity can be related to the landscape-forming flow rate Q via a general power-law relation ∝ Qζ, where the exponent ζ has exhibited wide variations across different watersheds. […]

Planetary Cave Exploration Progresses – Eos

Caves on Earth form by a variety of processes. Volcanism can leave behind lava tubes or gas-inflated chambers, fluid dissolution hollows out caverns in subterranean rock, and wind and weather can mechanically erode cliff or seaside caves, for example. Because many of these same processes operate on other planetary bodies in our solar […]

2020 AGU Election Statistics – Eos

In its most recent biennial election, for which voting ended last month, AGU members chose 54 new leaders to serve 2-year terms in 2021–2022. Union officers, Board members, section officers, student and early-career representatives to the Council, and the College of Fellows vice chair were elected. Here the AGU Leadership Development/Governance Committee takes […]

Greening the Friendly Skies – Eos

The fight over Heathrow Airport’s third runway has been going on for decades. On the proposed site in a cluster of villages outside of London, residents fought the demolition of 750 properties and the addition of a lot more aircraft noise. Climate activists—some of whom went so far as to occupy one of […]

Measuring Massive Magnetic Meteorites – Eos

For a week in the summer of 2019, a Smithsonian Institution warehouse looked like a scene from a 1950s science fiction story: a 2-meter prism of magnetic coils arranged around a half-meter-long meteorite. For researchers Elise Clavé and Clara Maurel, this was the payoff of four hectic months building and testing a brand-new […]

Machine Learning for Magnetics – Eos

Interpretation of (aero)magnetic anomaly maps typically involves a series of steps after optimization of raw flight data. Nurindrawati and Sun [2020] explore the performance of machine learning methods for this kind of problem. They test various sets of convolutional neural networks (CNN) and train the two optimal CNN designs (one for declination and […]