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1answer
48 views

When was it ever considered that the desert might be “man-made”, or otherwise anthropocenically-induced?

This answer pointed me to the Wikipedia page for Farouk El-Baz in which the desert research and theories subsection says: During the past 20 years in his research at Boston University, El-Baz has ...
0
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0answers
3 views

CO2 reduction by depopulation

Population reduction is not envisaged as a practical (never mind humane) solution to CO2 emission reduction as far as I can tell. I stumbled however on a paper discussing the estimated effects of ...
0
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1answer
43 views

Are candles more or less susitainable compared to lightbulbs? [on hold]

I'm specifically curious about the environmental impact of candles versus lightbulbs. From my understanding, most commerical candles use paraffin wax, which is a product made from petroleum oil (...
1
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0answers
20 views

Is there a name for a “moving meridian” corresponding to particular solar time?

Imagine a meridian that moves over the Earth's surface such that it remains at the longitude that corresponds to a particular solar time (e.g. midday). This meridian would remain stationary relative ...
-1
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0answers
48 views

what type of rock is this? and what's in it? is it worth anything? [on hold]

Found this in michigan about 1ft under the surface. what type of rock is it? it has red/white crystals imbeded. and shiney white rock surfaces. can i cut this open and it have cool stuff inside? is ...
3
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1answer
22 views

Why do (some) silicic bodies behave effusively instead behaving explosively as in common?

We encounter dacitic/rhyolitic melts generally in explosive volcanic events. But some of them behave as effusive dome flow. Why do some silicic bodies behave effusively?
2
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2answers
43 views

Can ionospheric plasma disturbances effect the weather?

I've read about how ionospheric discharges like jets can be initiated/triggered by lightning, and how lightning can propagate upwards from clouds. What I was wondering is if this can happen in ...
1
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1answer
46 views

What is the best solution to climate change based on scientific evidence?

Please don't answer without citing scientific research which has a general consensus or article from a reputable source based on verifiable research citations. I recently read this article about a ...
23
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0answers
397 views

Is it possible for a sting jet to form over a continental landmass?

Sting jets are thought to be responsible for some of the most damaging winds associated with extratropical cyclones in the mid-latitudes. So far they have only been confirmed in the European region, ...
1
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1answer
26 views

XRF analysis - recalculating results

For TAS diagram plot, one need to recalculate Major oxide data (NaO, K2O, SiO2). Do one need to recalculate the ppms of Zr,Nb and Y and % of TiO2 for Zr/TiO2 vs Nb/Y diagram plotting for rock ...
1
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1answer
28 views

What is the most real-time method of determining SPI?

For drought monitoring related to vegetation, I need to calculate Standardized Percipitation INdex for a given area. Where can I find the most real-time percipitation data to do this? The best I've ...
5
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1answer
85 views

What is the largest hurricane possible?

With Earth getting hotter and hurricanes also getting larger I wonder; Is there a limit on how big a hurricane can physically get?
0
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0answers
16 views

What type of rock is this? [on hold]

I found this rock in Arizona at a mountain it is magnetic and heavy for its size
2
votes
1answer
46 views

How can parameters of the ionosphere be calculated?

How can parameters of the ionosphere be calculated? Specifically, how do we calculate total ion density, total ion temperature and individual major ion densities from I-V Characteristics curve of ...
1
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1answer
79 views

Question about the sign of the shearing deformation terms

I have the following equation for the shearing term of the deformation zone in meteorology. The reference is this link: http://www.zamg.ac.at/docu/Manual/SatManu/main.htm?/docu/Manual/SatManu/CMs/Def/...
0
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0answers
21 views

Did global temperature increase or drop in the last 2 years?

This website Climate change global temperature from a governmental organization, shows 2 graphs , one called "History of global surface temperature since 1880" and the other called "Yearly surface ...
1
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3answers
75 views

A better way to prevent ice shelf from melting and raising ocean levels?

I just read this article by scientist who propose making giant snow machines to basically move the eroding ice shelf further inland. It’s been described as pretty much cost prohibitive (despite saving ...
3
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2answers
143 views

Classification of rivers according to width

I'm looking for a simple classification of rivers according to their width. In which size categories should I split them? This may usually be done according to catchment area but I'm more interested ...
6
votes
1answer
110 views

What are the phenomenon (artificial and natural) in play in this photograph “350m beneath Berezniki in Russia”?

This image is from the BBC Culture article Striking photos of human scars on Earth. It is accompanied by the text and captions below. But I still don't understand what I'm looking at at all. Can ...
0
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0answers
11 views

Do overlying strata subside before/during volcanic exogenous dome emplacement?

Is subsidence (graben faulting) expected before/during a volcanic exogenous dome emplacement on the surrounding strata?
0
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0answers
32 views

Can any one tell me if this rock was made by natives [on hold]

I found this rock at the same location I’ve been finding all my rocks in Arizona casa grande were I live used to be a Indian trail it’s about 3 1/2 in
11
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4answers
2k views

Why do we recycle paper?

Recycling metal and some plastics makes complete sense to me. Why bury something in a landfill that you'll have to find and dig up more of later. What I don't get is why we recycle paper products, ...
1
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0answers
17 views

What are Shoshonites? What conditions make them occur instead of andesites?

What is the significance of shoshonites? Why in some convergent margins, do shoshonites occur instead of andesites?
1
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0answers
18 views

Avra valley aquifier region boundary

Attached is an image of the Avra valley in Southern Arizona, USA from Effects of Kriging and Inverse Modelling on Conditional Simulation of the Avra Valley Aquifier in Southern Arizona -- Clifton and ...
4
votes
2answers
462 views

Are the cores of every mountain range igneous?

Every volcano is a mountain, but not every mountain is a volcano. Still, it strikes me that--at least for the mountain ranges I can think of in this moment--they all seem to have igneous cores. Is ...
2
votes
1answer
32 views

What do opaque rims on biotite in a volcanic rock mean?

In a volcanic region, i have examined two samples petrographically. One of them has biotites with extensive opacitic rims. The other samples biotites hasn't got this property. They have the same modal ...
9
votes
3answers
11k views

Why is the lithostatic pressure gradient 1 psi/ft? How is it derived from density?

Why is the geostatic (or is it the lithostatic?) gradient 1 psi/ft? How is that derived from g/cc? Thanks.
2
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3answers
67 views

Fissure eruption

Can fissure eruptions dislocate/deform ( fault, rotate, bend, folding) the surrounding strata which fissure ascending into. Or, can a laccolith reach to the surface (and flow) after folding the ...
0
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0answers
24 views

Can you help identify this rock? [on hold]

Red-Black rock (https://i.stack.imgur.com/bMSNn.jpg) Please help me to identify this rock. it has some weight. It is about 2" in diameter
1
vote
2answers
55 views

What determines the direction of wind [duplicate]

What determines the direction that a wind blows? I understand that the nature of my question is immensely broad but I see no other way to phrase the question. The question surfaced in my mind when I ...
0
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0answers
29 views

Is this a possible meteorite [on hold]

is this a possible meteorite it is magnetic I found it in a empty lot by the railroad in Arizona
2
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2answers
71 views

Why rely on climate models as opposed to paleoclimate data?

Something I hear often from climate scientists, and indeed even politicians, is that we "don't understand climate change very well". And, I'm sure this is true since the climate is a complex adaptive ...
0
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2answers
41 views

Wondering if this is a meteorite [closed]

I was wondering if this could be a meteorite
0
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0answers
22 views

Crystal geode near ocean on magmatic island? [on hold]

Location south Vancouver island OakBay ; 500 meters from ocean; 20 up bank meters from a creek Three to six feet below surface . Micro zone is a creek elbow and B-layer5f pale ocher silty sand with C-...
6
votes
3answers
300 views

Are plastics a carbon sink and how much carbon is released to the atmosphere making them?

If we were to make some technical jump to renewable fuel and renewable energy, would making plastics from oil release green house gasses, how much, and would plastic function as a carbon sink? Sorry ...
1
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0answers
23 views

Is there any program that gives you air temperature (and precipitation) information if you feed them the date and location (latitude,longitude)?

I know I can google each data point (latitude, longitude, date) one by one and find if the government of that country has archived past weather information. But this will take infinite amount of time ...
2
votes
2answers
62 views

Are there any differences between the subalkali and alkali rock occuring tectonic environments?

Here question ends. Beyond details exist Do they occur on the same tectonic regime? For a start to distinguish Subalkali rocks froms Alkali rocks, my knowledge says that mantle is the source of ...
5
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2answers
3k views

How can we calculate the temperature of the atmosphere, including the greenhouse effect?

I've been struggling to find equations that express how many degrees of warming greenhouse gases contribute, given the composition of an atmosphere (and solar insolation). What I did find was the ...
0
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1answer
97 views

The Medieval Climatic Anomaly

Trying to understand this question, posted to me by a lecturer at University: "The Medieval Climatic Anomaly was distinctive in terms of the prevailing climates and forcing mechanisms operating ...
-4
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0answers
31 views

Fascist graph on climate/solar insolation [closed]

http://hockeyschtick.blogspot.com/2015/01/analysis-solar-radiation-cloud-cover.html?m=1 What I am asking is, Can you refute these Fascists
1
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1answer
34 views

Community change along urban rural gradient

I was wondering whether someone has an idea about how to investigate community changes of plants/animals along an urban-rural gradient? I have a large data set consisting of plant/animal abundance and ...
0
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0answers
13 views

Land Use Land Cover Change Intensity Analysis

I got LULC maps for different years (single-band raster, categorical varible = 7 different LULC classes). Now I am trying to do Change Intensity Analysis in R-studio I followed this instruction (https:...
0
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0answers
39 views
2
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1answer
50 views

How does nature dilute Ocean and Seas so that we can swim in them?

I have a question about the seas and ocean we swim in. How does the Ocean get rid off all the natural pollutants (for example dead animal debris) and man-made pollutants (human waste, garbage, etc)? I ...
2
votes
1answer
39 views

Can planes damage the ozone layer?

So I heard that the Ozone Layer is a layer of gas in Earth's atmosphere. And I also heard once that the Ozone Layer is crucial in protecting life on Earth, as it blocks out harmful rays emitted by the ...
2
votes
0answers
30 views

Ice cores: how is Oxygen-18 isotopic variation converted to temperature changes?

The Dansgaard paper I've seen shows a roughly linear relationship between the delta-O18 in precipitation and mean annual temperature (at a given location). See Figure 3 in the paper. When converting ...
0
votes
1answer
64 views

Can aerostats be used for fine-grained control of the weather

Most of the discussed geoengineering ideas aim to change the average temperature of the earth instead of trying to control local weather. Aerostats can be used to change the local temperature in ...
-2
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0answers
44 views

What source in literature has introduced the greenhouse effect to scientific standards of theoretical physics? [closed]

What source in literature has introduced the greenhouse effect to scientific standards of theoretical physics? Prominent global climatologists (as well as “climate skeptics”) often present their ideas ...
1
vote
1answer
55 views

If planting trees is ineffective to tackle climate change, why do people plant them?

I've read answers that outline how if we afforested large (continental-scale) masses of land, it would do little in the way of tackling climate change. While it would sequester CO2 for about a century ...
-2
votes
1answer
94 views

Could someone please validate the Holmes equation [closed]

Dr. Robert Holmes has converted the ideal gas law to T = P M / (ρ R) in this paper: (Molar Mass Version of the Ideal Gas Law Points to a Very Low Climate Sensitivity) with T = temperature P = near-...

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