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Earthquakes in Turkey and Syria: what happened in February 2023?
  • EGU news
  • 15 February 2023

On the 6 February 2023, two earthquakes of 7.8Mw and 7.5Mw struck Turkey and Syria, causing the loss of thousands of lives and widespread damage. Local experts from Turkey, with EGU Division Presidents from seismology and natural hazards explain what happened, and why this event was so devastating.


Highlight articles

Selective deuteration as a tool for resolving autoxidation mechanisms in α-pinene ozonolysis

We discuss and show the viability of a method where multiple isotopically labelled precursors are used for probing the formation pathways of highly oxygenated organic molecules (HOMs) from the oxidation of the monoterpene a-pinene. HOMs are very important for secondary organic aerosol (SOA) formation in forested regions, and monoterpenes are the single largest source of SOA globally. The fast reactions forming HOMs have thus far remained elusive despite considerable efforts over the last decade.


Particulate organic matter in the Lena River and its delta: from the permafrost catchment to the Arctic Ocean

Arctic warming accelerates permafrost thaw and release of terrestrial organic matter (OM) via rivers to the Arctic Ocean. We compared particulate organic carbon (POC), total suspended matter, and C isotopes (δ13C and Δ14C of POC) in the Lena delta and Lena River along a ∼1600 km transect. We show that the Lena delta, as an interface between the Lena River and the Arctic Ocean, plays a crucial role in determining the qualitative and quantitative composition of OM discharged into the Arctic Ocean.


Patterns and drivers of water quality changes associated with dams in the Tropical Andes

Dams are an important and rapidly growing means of energy generation in the Tropical Andes of South America. To assess the impacts of dams in the region, we assessed differences in the upstream and downstream water quality of all hydropower dams in Colombia. We found evidence of substantial dam-induced changes in water temperature, dissolved oxygen concentration and suspended sediments. Dam-induced changes in Colombian waters violate regulations and are likely impacting aquatic life.


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The 2023 Carnival disaster in São Paulo: an all time record for rainfall in Brazil

In February 2023, Brazil experienced its largest rainfall event on record, which devastated the northern coast of the state of São Paulo. This event caused landslides, floods, and numerous fatalities, making it even more tragic than previous disasters in the region, which already have been elaborated on in another blog post. The situation highlights the urgent need for effective emergency management plans, and early warning systems to tackle the increasing frequency and magnitude of extreme weather events due to climate …