Community Digest

Top new questions this week:

Would home heat pumps provide large benefits against climate change?

Some facts I have learnt The Global Warming Potential (GWP) was developed to allow comparisons of the global warming impacts of different gases. Specifically, it is a measure of how much energy the ...

climate-change air-pollution pollution carbon  
asked by Chris Rogers 6 votes
answered by LShaver 6 votes

Volcanic Explosivity Index of Cumbre Vieja eruption

I have been following the last events of Cumbre Vieja eruption since it started last month. Trying to grasp some basic knowledge of volcanology I have seen the eruption is classified as VEI-3 in the ...

geology volcanology natural-disasters volcanic-eruption  
asked by M_1 5 votes

How are boundary conditions considered in PDEs?

I'm new to numerical modeling and trying to figure out how things work inside business codes. Consider a 1D domain divided into small cells of width dx and at the East and West a Neumann conditions ...

hydrology numerical-modelling hydrogeology  
asked by narutoArea51 4 votes
answered by Jeffrey J Weimer 5 votes

Why is the delta part of Jezero crater higher than the surroundings?

In images of Jezero crater on Mars, it looks like the delta fan is higher than the surrounding crater floor. This indeed seems to be the case with closer-up images from the Perseverance rover taken ...

sedimentology rivers erosion mars  
asked by usernumber 3 votes

Electric phenomenon when tornado funnel disappears?

A video of a recent tornado in Germany shows two points of glowing light appear at the end of the lifetime of a tornado, when the funnel is already almost entirely retracted. Here is a video link. The ...

meteorology lightning tornado  
asked by Peter - Reinstate Monica 2 votes

Oil FIlled Geode

Five weeks ago my dad and I collected geodes near Bedford, Indiana, from private property with the full permission of the owner. While cutting the rocks one produced an unexpected result - oil poured ...

asked by Brady Mick 1 vote

How can you find the seismic intensity at a given point?

Given the distance, material, and seismic intensity at the epicenter, can you calculate the seismic intensity at a given point?

geophysics earthquakes seismology  
asked by Nikhil R. 1 vote

Greatest hits from previous weeks:

Is climate change a vicious circle?

My question refers to the current process of climate change. CO2 is rising, which leads to the greenhouse effect, which raises temperatures. This leads to more wildfires, which reduces number of trees,...

asked by luchonacho 36 votes
answered by Jean-Marie Prival 42 votes

What are the high field strength and large ion lithophile (HFS or HFSE & LIL or LILE) elements?

There are two groups of elements that are frequently mentioned when discussing incompatible trace elements. They are the high field strength elements (HFS or HFSE) and the large ion lithophile ...

geology volcanology geochemistry mineralogy petrology  
asked by Gimelist 13 votes
answered by Gimelist 9 votes

Transfer precipitation forecast in mm to expected snowfall in cm

What conversion functions exist to transfer precipitation forecast in mm to expected snowfall in cm? Simple rules of thumbs as well as more advanced methods would be of interest.

meteorology precipitation snow  
asked by BHF 15 votes
answered by Peter Jansson 12 votes

What significant factors influencing geological change are still occurring?

I am teaching a secondary school course on my state's local history. The textbook begins with the history of the first humans, yet I think it is unfair not to start back much earlier, introducing the ...

geology earth-history  
asked by Village 9 votes

Is the color of the sky the same everywhere on earth?

Is the color of the sky at noon (local time) in, say, NY, Buenos Aires, London, Nairobi, Sydney, New Delhi and Tokyo the same? I choose the specific time of noon to exclude the twilight colors of the ...

atmosphere radiative-transfer  
asked by MagTun 23 votes
answered by f.thorpe 15 votes

How is heat transferred from the core through the mantle to the crust?

So, there are three main methods of transferring heat: radiation, convection/mass transfer, and conduction. Presumably radiation is not a major method of heat transport between the core and the crust, ...

geothermal-heat mantle  
asked by naught101 10 votes
answered by tobias47n9e 11 votes

How long does it take for a stone to alter?

We see stones and they appear to be the same throughout our life time. Mountains also appear to not significantly change. So do mountains and stones decompose? What is the life span of a stone? After ...

geology rocks erosion weathering  
asked by avito009 11 votes
answered by Gary Kindel 13 votes

Can you answer these questions?

How accurate are paleomagnetic orientation measurements?

I am curious what the modern accuracy for paleomagnetic azimuthal orientation measurements are. Let's say for a magnetite grain, is the orientation of the magnetic moment for a single crystal resolved ...

geomagnetism paleomagnetism rock-magnetism  
asked by thehungrygraduate 1 vote

What crops benefit the most from AgTech and particularly soil monitoring?

I am trying to understand the benefits of AgTech for different crops, and particularly IoT-based solutions like soil sensors (humidity, temperature, NPK). What are the crops that are benefitting the ...

asked by TheIndonesian 1 vote
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