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1500 questions
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How do I estimate the mass of a deciduous tree's leaves?
Regarding the amount of biomass in a tree, what would be the approximate total mass of leaves on a large deciduous tree (e.g. maple, oak) while green in spring? Or, how many leaves could be on such a tree. This would allow me to multiply by the…
Max
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8
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What is more important in Antarctica calving or basal melting of the ice shelves?
Ice shelves are present along 75% of Antarctica coast and cover over 1.5 million km2. The two main processes causing mass loss of the ice shelf are basal melting and calving. Which of the two processes is more important in Antarctica?
arkaia
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8
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2 answers
Are lightning storms more common at night?
I have, to my knowledge, seen far more lightning strikes and heard more thunderclaps at night than I have during the day.
Are lightning storms more common at night, or are they just more noticeable at night? If it is significant, my experience is…
Tritium21
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8
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Explain the Idea of Pangaea and how the continents have reached their current positions
I know Pangaea was a supercontinent that existed 270 million years ago and it started to break apart around 200 million years ago. I'm not clear on whether Pangaea was 1,2, or multiple tectonic plates. Can someone help me?
user2988
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8
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3 answers
Why do deviated wells show poor correlation to seismic data?
Well correlation and calibration is an important step in any type of seismic inversion. In order to obtain a good broadband frequency model, the synthetics should be correlated with original seismic data. The wavelet used for generating synthetic…
Kunal Rathod
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8
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1 answer
What are the temperature and pressure conditions an ROV design would have to deal with to descend to 4000m?
I have looked at a few do it yourself remotely operated vehicles (ROV), and considered making one myself. However my research on the web has turned up a lot of conflicting information about determining what the temperature and pressure ranges to…
steverino
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8
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Availability of mean squared slope or wave spectra data for the sea surface
The mean squared slope is a property of the sea surface that is often sensed by microwave radars [1] [2].
While spatial data for sea surface salinity, sea surface height, and significant wave height exist (Ex. [3] [4]), I've not been able to find…
user4624937
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8
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1 answer
Flexure of a viscous lithosphere - derivation
I have been trying to figure out solution for the fourth order differential equation of flexure for a viscous plate.
The fourth order differential equation for a viscous plate is given as
$$Dv*\dfrac{\partial^4}{\partial x^4}\bigg(\dfrac{\partial…
geodyn_usr
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8
votes
1 answer
What atmospheric phenomenon am I seeing in this photo?
On a trip to Brighton, England on April 12th, 2015, I noticed this strange plume in the sky over the English Channel at about 13:00 hours. It looks like;
Something that fell out of the sky - the news and other chatter over the following days…
Jongosi
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8
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1 answer
Where does the 2015 Nepal earthquake rank amongst earthquakes since 1900?
Wikipedia provides a list of deadly earthquakes since 1900. Where would the April 2015 Nepal earthquake (magnitude currently estimated as 7.8 or 8.1) rank in this list, in terms of magnitude?
user2846
8
votes
1 answer
Nepal earthquake of 25 April 2015
On the 25th of April at about 11-12pm, an earthquake whose epicenter was in Nepal was felt with a magnitude of 7.5 in Delhi NCR, as well as in other Indian states (Rajasthan, Bihar, Jharkhand, and many more).
What were the reasons behind it?
Ravi PK
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8
votes
1 answer
Are coral cays and coral atolls just volcanic islands?
Are coral cays and coral atolls just a different type of volcanic island? When I hear: "volcanic island" I think at places like Moorea or Hawaii, but ultimately, coral cays and coral atolls lay their foundation on the residuals of a volcano, right?
Aurelius
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8
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1 answer
What is the error in bathymetric observations in the presence of vegetation?
How can we determine the error associated with bathymetric measurements when we survey over submerged vegetation? Let's say we are using single-beam echo-sounder over a patch of Posidonia, what are the expected errors and how can we determine them?
arkaia
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8
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0 answers
El Niño Spring Barrier - optimal time to run a long range climate forecast
In an answer to this question - What is the predictability of El Niño/La Niña? Isopycnal Oscillation talks about a "decrease in skill during the boreal spring as SST anomalies are abnormally variable". Today a private weather forecasting company in…
user1066
8
votes
1 answer
What are Horton's laws?
Robert E. Horton coined these four laws: the law of stream numbers, the law of stream lengths, the limits of infiltration capacity, and the runoff-detention-storage relation.
What are they specifically? Googling only yielded me paywalled articles…
mart
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