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SM
Seismology

Earthquake Watch December: Petrinja Mw 6.4

Earthquake Watch December: Petrinja Mw 6.4

What we know On December 29, a strong earthquake Mw 6.4 hit Petrinja at 12:20 CET, a town located in Central Croatia. This event is the largest onshore earthquake rupture in Central Europe since the M 6.5 Norcia earthquake occurred in 2016 (e.g. Scognamiglio, 20181) which killed 299 persons and 4,500 became homeless. Recent reports on the Petrinja quake suggest seven fatalities and heavy damages o ...[Read More]

TS
Tectonics and Structural Geology

Features from the Field: Shear Zones and Mylonites

Features from the Field: Shear Zones and Mylonites

The San Andreas Fault in California, the Alpine Fault in New Zealand, or the Main Frontal Thrust in the Himalayas are some of the most famous and largest fault zones that accommodate the relative displacement between two adjacent crustal blocks. Such faults, however, represent only the shallower expression of something much bigger: a crustal shear zone. In the first 10 kilometers or so of the crus ...[Read More]

NH
Natural Hazards

Advances in earthquakes forecasting pass through machine learning

Advances in earthquakes forecasting pass through machine learning

In today’s interview, we meet Dr Fabio Corbi, a researcher at IGAG-CNR, the Institute of Environmental Geology and Geoengineering of the Italian National Research Council. Fabio has experience in analogue modelling of megathrust earthquakes and he is currently exploring the potentiality of machine learning in this research field. Hi Fabio, would you briefly tell us about you and your career? ...[Read More]

CR
Cryospheric Sciences

Atmospheric Rivers: A blanket for Antarctic winter sea ice

Atmospheric Rivers: A blanket for Antarctic winter sea ice

The mysterious appearance and disappearance of the Weddell Polynya, a giant hole in the sea ice cover, has long puzzled scientists. Recent work reveals that the polynya is initiated and maintained by gigantic and formidable atmospheric currents: atmospheric rivers! Read on to find out more… Each year, approximately 15 million square kilometers of ice forms in the Southern Ocean around Antarctica d ...[Read More]

GD
Geodynamics

The Sassy Scientist – Welcome to Hotel California

The Sassy Scientist – Welcome to Hotel California

Congratulations Glenn! You survived your socially distanced PhD defence and after three months in your mum’s spare room you are raring to go, chomping at the bit, and approaching the start line for the next stage of your academic career. Having spent the last eight years in education, it’s time to start a new job! What should I do on my first day at work in a new place? Dear Glenn, Whe ...[Read More]

TS
Tectonics and Structural Geology

TS Must Read – Ramsay (1980): Shear zone geometry: a review

TS Must Read – Ramsay (1980): Shear zone geometry: a review

Ramsay’s 1980 important contribution is a practical and theoretical handbook about shear zones, where the reader can find a detailed classification of shear zones, their description, and mathematical explanation. A definition of the concept of shear zones opens the article, followed by the shear zones classification into three types, namely brittle (e.g., Fig. 1a), brittle-ductile (e.g., Fig ...[Read More]

GD
Geodynamics

Rift linkage and rotating microplates

Rift linkage and rotating microplates

2020 left your head spinning? This week Derek Neuharth from GFZ Potsdam introduces us to the spinning microplates that can be found in extensional plate boundaries such as the East African Rift System and the East Pacific Rise. Divergent plate boundaries Microplates are enigmatic features that form in the boundaries between tectonic plates. Generally, plate boundary dynamics are divided into three ...[Read More]

CL
Climate: Past, Present & Future

Life of a Climate Scientist

Life of a Climate Scientist

Dear readers of the EGU Climate: Past, present and future blog. We hope you are having a good start to the New Year. Last year we faced a multitude of challenges due to the pandemic. Hopefully, by the end of 2021, the vaccination campaign will help combat the pandemic, and allow us to go back to some semblance of normality; fingers crossed! About Climate scientists Climate scientists investigate E ...[Read More]

AS
Atmospheric Sciences

Community Effort to explore the Papers that shaped Tropospheric Chemistry

Community Effort to explore the Papers that shaped Tropospheric Chemistry

The genesis of the idea to explore the influence of papers on shaping the field of tropospheric chemistry came when editing a textbook chapter I had written a decade earlier.  As I edited it I thought, what really is new; text-book worthy over the last 10 years?  In some senses what is text-book worthy?    These type of questions inspired me to think about where atmospheric chemistry has got to as ...[Read More]

TS
Tectonics and Structural Geology

TS Must-Read – Brace and Kohlstedt (1980): Limits on Lithospheric Stress Imposed by Laboratory Experiments

TS Must-Read – Brace and Kohlstedt (1980): Limits on Lithospheric Stress Imposed by Laboratory Experiments

In 1980 Brace and Kohlstedt published a short paper that constrains the strength of continental lithosphere by extrapolating laboratory measurements of rock strength to geological conditions. Their approach follows earlier work by Goetze and Evans (1979) and relies on two key considerations. First, the brittle strength is given by the frictional strength of rocks following Byerlee’s law (Bye ...[Read More]