Pont
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Confused about whether physical impact is 'erosion'
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7 votes

I'm assuming here that you're asking whether you can apply the term ‘erosion’ to the damage your stone suffered, rather than the damage your floor suffered. In this case, the applicability of the term ...

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What are the differences between alluvial, eluvial and colluvial deposits?
2 votes

Your question is almost a duplicate of What is the difference between eluvium and alluvium?, but you also ask about colluvial deposits. The accepted answer for that question references this convenient ...

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Where can I find geomagnetic observations for the Indian Ocean region in 2017?
1 votes

For surface data, a good place to start is Intermagnet, a global network of geomagnetic observatories. Their data download page lets you filter by time span and region, and sample rates down to the ...

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Which geological processes will destroy plastic?
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5 votes

Some simplifying assumptions This is quite a broad and complex question to answer, so I'm going to simplify it shamelessly to make it a little more answerable. Firstly, there are a huge number of ...

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How much would a nine inch slice of the Earth's inner core weigh?
4 votes

An oddly specific question, but quite straightforward to calculate. Let's start by calculating the volume of your slice. I'm taking values for the inner core's physical characteristics from this ...

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What is Oligo-Miocene radiation?
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8 votes

The ‘Oligo-Miocene’ part The Oligocene and the Miocene are epochs of geological time. The Oligocene lasted from ~33.9 million years ago to ~23 million years ago; the Miocene followed immediately ...

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Were there any plans or proposals for "unilateral geoengineering deployments" before this paper was publsihed?
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8 votes

I think the introduction of the paper itself covers this adequately: … a growing number of studies have investigated regional SG application scenarios, which could prove preferential to a global ...

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Is there a high-temperature, non-magnetic glue that doesn't dissolve in water?
2 votes

Your question is quite similar to one that I asked some time ago, with the additional requirement that the glue be insoluble in water, which unfortunately excludes sodium and potassium silicate. Like ...

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Least populated time-zones
1 votes

Communisty has done a good job of giving the winners in various categories, but I think it's also worth mentioning the runner-up UTC+12:45, which is only used by the Chatham Islands, population 600. ...

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Growth of polar vortices vs projective geometry; what does this figure mean?
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2 votes

I suspect that this diagram has nothing to do with polar vortices in the meteorological sense. It’s hard to prove a negative, but digging into the source of this image led me in some very non-...

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Changes in Real Solar size around 1979?
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1 votes

No, no such changes have been observed. Laclare et al. (1996) summarize various published solar diameter data from observations made between 1970 and 1995. Here's Figure 6 from their paper. As you ...

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Is the Mauna Loa CO$_\mathsf{2}$ record affected by the nearby mantle plume?
13 votes

How is ist possible that Mauna Loa Observatory is the International Reference Observatory for CO2 Global Meassurments I don’t know that it is ‘the International Reference Observatory’. The Mauna Loa ...

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Plotting wind barbs in python (no U,V component)
3 votes

The data format you have (magnitude and direction) is usually referred to as polar co-ordinates. The data format you need (horizontal and vertical offsets) is Cartesian co-ordinates. There's plenty of ...

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Where can I find information about the basic concepts of sedimentary basins?
2 votes

In general, a good answer to "where can I learn the basic concepts of X" is "a textbook on X". For sedimentary concepts, you might try Nichols (2009), for instance. Academic papers are a publication ...

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How and when people first realized that Antarctica is a continent?
8 votes

Probably the first recorded observation (and certainly one of the first) of the Antarctic mainland was of the Trinity Peninsula, part of the Antarctic Peninsula, by Edward Bransfield in 1820. Even ...

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What is this "crystal ball" located at a meteorological station?
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33 votes

It's a Campbell-Stokes sunshine recorder, used to record the times at which the sun is shining. It acts as a lens, focusing the sunlight onto a piece of card. If the sun is shining, the focused beam ...

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Is the term "fertile ash" a misnomer?
5 votes

There are actually two slightly different ways to interpret the phrase "fertile ash". Both are valid, and you'd need to look at the context of the phrase to determine exactly which is meant (this is ...

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Is this paper attributing a change in polar wander to climate change?
6 votes

The term ‘polar wander’ is ambiguous. In this case it's got nothing to do with the magnetic poles, but rather with the Earth's spin axis. If you think about a desk globe mounted on an axle, the poles ...

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Definition of "hundreds of ice accretion"
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2 votes

I think that it's referring to hundredths of an inch, and "hundreds" is a typo for "hundredths". This FAA information sheet says: All ice accretion amounts will be reported to the nearest one-...

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Is there any experiment to prove that CO2 with the atmosphere concentration can have greenhouse effect?
41 votes

Your question about water vapour is quite a common one among people learning about the greenhouse effect. Once you discover the relevant proportions of water vapour and CO2 in the atmosphere, it's ...

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How high must one be for the curvature of the earth to be visible to the eye?
22 votes

A quick Google turned up a published article answering precisely this question (Lynch, 2008). The abstract states: Reports and photographs claiming that visual observers can detect the curvature of ...

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How are natural specimens, such as ‘Moqui Marbles’, distinguished from man-made artifacts?
7 votes

Like Michael, I find your question a little unclear, but the crux of it seems to be this: ... does science have to conclude [that a specimen is] just a rock because the composition is entirely from ...

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Newton's estimate of the age of the Earth
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11 votes

The estimates of Newton and Kepler, and the similar estimates of dozens of their contemporaries, were produced by treating the Bible as a historically accurate document and deriving a chronology from ...

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What is the purpose of this large structure on a Japanese hillside?
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10 votes

The structure looks similar to this photograph of a "Japanese land retention system" mentioned in passing towards the bottom of this webpage. From the linked page: Land retention systems in Japan, ...

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Is a complete global flood physically possible on Earth?
20 votes

The "precipitation rate" part is easy to answer, at least to a first approximation. We have 40 days and nights (960 hours) in which to raise sea level above the peak of Mount Everest (let's round up ...

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Deciphering NCDC data
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4 votes

The documentation linked from the datasets page states: Air Temperature (all units in Fahrenheit on PDF monthly form and tenths of degrees Celsius on CSV or text) EMNT - Extreme minimum ...

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Has a reduction in car use ever had an effect on the ozone layer?
15 votes

The sequence of events you describe has never happened, for several reasons. As Sabre Tooth mentions in the comments, vehicle emissions have a negligible effect on stratospheric ozone. (Note that ...

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Help determining virtual geomagnetic pole
7 votes

You say you're "not given the declination angle", but you also say "the horizontal direction of magnetism of these lavas is due west". That's your declination angle, right there! Since I assume (from ...

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Laboratory simulation of the Earth's magnetic field
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8 votes

Magnetohydrodynamic experiments intended to create laboratory analogues for the Earth's magnetic field generally use molten sodium rather than nickel. You can read about the details of one such ...

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Meaning of the C in the unit "mg C L-1"
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11 votes

Given the subject matter of the paper, I'd assume that it stands for carbon, and the whole expression refers to milligrams of carbon (or organic carbon) per litre of lake water.

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