Category: Earth science

Change in earth mass since the time of the dinosaurs

Asked by: Ray Carrao Was there less gravity when dinosaurs were alive? My friend and fellow science writer Matthew Francis covers the gravity angle over at his blog – there’s no evidence that the Earth’s gravity was weaker during the heyday of the dinosaurs. Even as continents shifted around, the Earth’s gravity didn’t change. What

Electric permittivity of quartz

Asked by: Jeremy Whiteman The extracted dielectric permittivity of quartz as a function of frequency using the extraction method described in the text is depicted. A constant value of approximately 3.8 is obtained for the frequency range 1 to 40 GHz and on average 3.76 for the frequency range 140 to 210 GHz. What is

Why does the meandering pattern of the jet stream itself propagate?

Asked by: Jeremy Whiteman Why does the jet streams have a meandering tendency? Sometimes, like in a fast-moving river, the jet stream’s movement is very straight and smooth. However, its movement can buckle and loop, like a river’s meander. This will slow things up, making areas of low pressure move less predictably. The jet stream

Has irreversible global warming already begun?

Asked by: Tammy Peters The effects of human-caused global warming are happening now, are irreversible on the timescale of people alive today, and will worsen in the decades to come. How many years until global warming is irreversible? There is some indication the system has experienced a gradual weakening over the past few decades, and

Are there pockets of liquid carbon dioxide in Earth’s oceans?

Asked by: Crystal Jones Quick answer is no, however there are methane clathrates somewhere down there and possibly also carbon dioxide clathrates as well. How much CO2 is trapped in the ocean? While previous estimates put the ocean sink at around 2bn tonnes of CO2 per year, we find that it could be 0.8-09bn tonnes

How to sample for K-Ar dating?

Asked by: Crystal Jones What kind of samples are required for potassium-argon and argon argon dating? The older method required splitting samples into two for separate potassium and argon measurements, while the newer method requires only one rock fragment or mineral grain and uses a single measurement of argon isotopes. How is K-Ar dating done?

Is there a real time tool to monitor electric flow in the clouds?

Asked by: Aaron Zilla How do I monitor my clouds? Cloud monitoring best practices Observe your cloud service usage and fees. … Identify metrics and events that affect your bottom line. … Use a single platform to report all data. … Trigger rules with data. … Separate your centralized data. … Monitor the user experience.

Lanes of flat ocean surface in coastal waters

Asked by: Aaron Zilla What are the lines on the surface of the ocean? These patches are actually called windrows, and they are usually parallel lines of “stuff” sometime stretching for more than a kilometer. In our waters they are composed largely of sargassum, foam/bubbles, and a mixture of floating polyfoam, plastic, and other jetsam

Does the geographic North Pole move?

Asked by: Ann Shaw The magnetic and geomagnetic poles change quite drastically. But even the geographic north pole moves up to 10 meters a year as the earth wobbles on its axis due to seasonal air pressure differences across the globe, melting ice caps, and so on. Does the North Pole always move? Magnetic north

Where can I get archived hourly temperature data?

Asked by: Ann Shaw The authoritative sources for your data are: ASOS: Automated Surface Observation Systems at airports, and. MADIS: the Meteorological Assimilation Data Ingest System, from NOAA. How do I find historical temperature data? How to Obtain Historical Climate Data Local Current Conditions. Local Enhanced Radar. Local Standard Radar (low bandwidth) Regional Standard Radar

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