I just read news that Antarctica had set a new record high temperature, above 18 °C. How can this be the case if it is currently winter there?
Earth scienceAsked by: Lacey Moreno What is the record high temperature in Antarctica? The recent extraordinary heatwave in Antarctica appears to have set a new World Record for the largest temperature excess above normal (+38.5 °C / +69.3 °F) ever measured at an established weather station. It “appears to have set a new World Record for
To what extent has the Earth’s surface been geologically mapped?
Earth scienceAsked by: Twanya Mason What is meant by geological mapping? Definition of geological map A geological map is the representation, about a topographic map, of the different types of rocks that outcrop in the terrestrial area and the types of contacts among them. For distinguishing the rocks colors are used. How do you map an
Can paleomagnetic techniques determine the exact direction of Earth’s magnetic poles in the past, not just their polarity?
Earth scienceAsked by: Twanya Mason What has paleomagnetic data been used for? This record is preserved by many rocks from the time of their formation. The paleomagnetic data have played an instrumental role in deciphering the history of our planet including a decisive evidence for continental drift and global plate tectonics. What does paleomagnetic measure? Paleomagnetism
Why is seawater saline?
Earth scienceAsked by: Becca Brown Ocean salt primarily comes from rocks on land and openings in the seafloor. Salt in the ocean comes from two sources: runoff from the land and openings in the seafloor. Rocks on land are the major source of salts dissolved in seawater. Is sea water saline water? Sea water is composed
Stability correction factor in the Wavewatch III wave model
Earth scienceAsked by: Becca Brown What is Wavewatch III? The wave model chosen as part of developing this modeling system is the WAVEWATCH III wave model. WAVEWATCH III (https://github.com/noaa-emc/ww3) is a community wave modeling framework that includes the latest scientific advancements in the field of wind-wave modeling and dynamics. How do you cite Wavewatch 3? October
Strange circular structures found on a photo from Mars rover Curiosity at Dingo Gap
Earth scienceAsked by: Saul Ruiz Is the Curiosity rover still working? On , a detailed overview of accomplishments by the Curiosity rover for the last ten years was reported. The rover is still operational, and as of , Curiosity has been active on Mars for 3608 sols (3707 total days; 10 years, 55 days) since its
How were smaller reptiles/mammals more successful at surviving the KT event than larger dinosaurs?
PaleontologyAsked by: Saul Ruiz How did small mammals survive the dinosaur extinction? “It was the huge amount of thermal heat released by the meteor strike that was the main cause of theK/T extinction,” Graham explains, adding that underground burrows and aquatic environments protected small mammals from the brief but drastic rise in temperature. What advantages
Classification of oil shale
Earth scienceAsked by: Evelyn Partridge Classifying Oil Shales by Mineral ContentOil shales are classified in three main types based on their mineral content: carbonate-rich shale, siliceous shale, and cannel shale. Carbonate-rich shale deposits have high amounts of carbonate minerals. What is the classification of shale rock? shale, any of a group of fine-grained, laminated sedimentary rocks
Extreme rainfall events
Earth scienceAsked by: Evelyn Partridge What is extreme rainfall event? Extreme precipitation events are defined as days with precipitation in the top 1 percent of all days with precipitation. Date Range: 1901 – 2016. Contributors: NOAA National Centers for Environmental Information. What is extreme rainfall called? Definitions of downpour. a heavy rain. synonyms: cloudburst, deluge, pelter,
How and why do these tree-like river structures form?
Earth scienceAsked by: Christopher Pugh Why do trees grow around rivers? Trees provide shade during periods of low flows and high temperature, reducing water temperatures and helping to maintain oxygen in the water. Too much shade can be a problem in suppressing growth of aquatic plants, but a mix of dappled light and shade is ideal.