All Questions

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0answers
5 views

Reference for quoting seasonal lag image

I would need a reference for quoting the image, provided by kwinkunks, in which overlaps insulation and temperature explaining seasonal lag
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0answers
4 views

Found a white, glittery rock in the woods of ILLINOIS. MAY YOU PLEASE HELP ME IDENTIFY WHAT KIND OF ROCK I'VE FOUND?

Its mostly white, kind of grayish but not really. And it has little particles or minerals that make it look really glittery. Im really hoping its some type of quartz rock or it at least has quartz in ...
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0answers
6 views

What kind of rock/fossil is this

I found it in the clay in seattle, wa. It started out looking like green grey concrete, but I broke a piece off and noticed blue, so I soaked in hydrochloric acid for two days periodically cleaning ...
1
vote
1answer
9 views

Is there any downscaled income data for representative concentrations pathways?

I know that downscaled income data existed for The Special Report on Emissions Scenarios (SRES) Scenarios for IPCC's climate change scenarios. (http://ciesin.columbia.edu/datasets/downscaled/) For ...
1
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1answer
20 views

Which ocean is going to be swallowed by the Supercontinent Cycle, Atlantic or Pacific?

The register shows several supercontinents have been formed on Earth's History: "The most recent supercontinent, Pangaea, formed about 300 million years ago (0.3 Ga). There are two different ...
2
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0answers
15 views

Does long-term exposure to ocean water change the chemical structure of plastic into ocean plastic?

I've just been thinking a fair deal about ocean plastic and the ocean clean-up project. Is there something in saline water that changes the chemical composition of most plastics to make them pretty ...
1
vote
1answer
21 views

Rock ID: 2 layer, hard dark brown top, sandy light orange bottom, Southern Utah redrock country

Dull luster, with 2 main layers: TOP) about 1 cm thick, plate-like, dark coffee brown, bubbly melty looking texture. The top layer is harder (about a 5, scratched with a knife) and the edges are ...
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0answers
9 views

How do you interpret Oxygen Isotope changes?

In a paper I am reading, the authors note "large (5-7%) negative shifts in the oxygen isotopic composition of geologic proxy materials" (Davis 2008, pg. 102) in several regional basins. This is then ...
1
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1answer
27 views

Where can I find wave height/period, current velocity and wind speed/direction data at the Qiangzhou strait in China?

I'm looking for time series of wave height/ period, velocity currents and wind speed/direction specifically for the Qiangzhou strait in China. Global data sets could also work.
7
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0answers
20 views

Would the subsurface event leading to tree death at West Tern Lake in Yellowstone be visible in thermal imaging?

The New York Times article It’s Warm and Stealthy, and It Killed Yellowstone Trees and Turned Soil Pale describes an even that took place over the past few decades where a small and well-defined ...
1
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0answers
23 views

“Great Dying” reduction in biomass

In "The Great Dying" About 250 million years ago, at the end of the Permian period, something killed some 90 percent of the planet's species. Less than 5 percent of the animal species in the seas ...
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1answer
26 views

Please help me identify this rock. Thanks! [on hold]

I found this rock in our home and I was curious, about the type and background of the rock. We live in the Midwest. Any information would be greatly appreciated.
0
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0answers
17 views

On what extend MODIS reflect the real image of snow cover at high altitude, steep and deeply snow cover area?

The accuracy level of MODIS data comes under debate for the representation of snow cover of high altitude. For example, third pole (Tibetan plateau) has elevation above 6000 m and stretching over a ...
1
vote
1answer
40 views

How acidic waters make rocks disappear?

I was working on this science project. I was on step 11, day. 4. Since day 2, I found out that my pH and the mass of the rock (limestone) stopped changing. This project should proves acidic water ...
2
votes
0answers
40 views

Why Earth's outer core does not dissolve into the mantle?

It is well accepted that the outer core is made out of liquid iron and nickel, and as everything else it should tend to reach chemical equilibrium with its surrounding. In particular, I would expect ...
0
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0answers
16 views

What is this smooth flat black rock? [on hold]

I am trying to identify a rock for my school project/ my rock is smooth, flat and shiny. It closely resembles a pebble in shape. I believe that it is very strong and doesn't leave powder when ...
0
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0answers
33 views

I found a large 3925lb rock [on hold]

It,s almost totally round a little Oval shape. It's close to old volcano's I did weight it and it weight's 3925 lbs, it's about 3 ft tall There was another one found in the same area I was ...
1
vote
1answer
36 views

What are the hottest temperatures ocean life can survive at [on hold]

What are the hottest average annual temperature for life in the ocean to withstand? Particularly algae This could include life from all points in earth history.
0
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0answers
21 views

Tipping of Taylor Columns

The notion of taylor columns arises from Taylor-Proudman theorem. The fluid in a vertical column moves in concert under suitable conditions. The notion of such columns are easily defined as vertical ...
2
votes
1answer
24 views

could a rhyolitic magma melt a ferromagnesian mineral like olivine?

if the temperature of a felsic magma is about 800-650 °C and olivine melting point oscillates between end members forsterite and fayalite near 1900-1200 °C, Does this mean that an olivine crystal in ...
3
votes
1answer
64 views

Why the “Mission to Earth’s core” proposal suggests using liquid iron instead of lead?

Nature communications article "Mission to Earth's core — a modest proposal", suggests placing a large volume of liquid iron in a crack and let it sink all the way to the Earth's core, carrying along a ...
7
votes
2answers
357 views

What are these Gizmos at Izaña Atmospheric Research Center in Spain?

This tweet from the account of the Centro de Investigación Atmosférica de Izaña (AEMET) http://izana.aemet.es Izaña Atmospheric Research Center (AEMET) shows images of meteorological instruments ...
0
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2answers
35 views

Can anyone help me identify this type of translucent green mineral? [on hold]

This is the photo of the rock. I found it in the mountains in yemen, near rocks where a well was dug out. Its translucent green and It doesn't feel that heavy. I think it's some type of quartz.
0
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1answer
27 views

Found a rock like no other [on hold]

identification request This rock was found in Somerset Co, NJ. It weighs about 10 lbs. It was found buried about a foot under a patch of daffodils in the middle of the woods. It is triangular in shape ...
0
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1answer
20 views

International Timing Zone

Why not make International Timing Zone just a straight line like this?
0
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0answers
20 views

Help me identify this rock green [closed]

Will someone be kind to help me identify this 7in x 6 1/2 inches cold smooth green very dense and heavy rock.
-1
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0answers
18 views

Found rock please help identify [on hold]

Hi found this rockhounding It has metal and gold shyne in body any help would be wonderful Pic is of a window Thank you
2
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0answers
31 views
+50

Importance of soil adjusted vegetation indices for indoor use

I've been doing research on vegetation indices to try and prepare for my indoor plant analysis project. I have a question about soil adjustments, specifically soil line based indices like PVI. Is ...
4
votes
1answer
44 views

Is the Arctic already ice-free during summer?

Not an expert in this field but I'm just curious as to how accurate the Google Map is here Also, from the interview with scientist Peter Wadhams, his estimate seems to be spot-on. I still remember, ...
1
vote
0answers
7 views

Equations for Mantle Flow and Isostatic Rebound

In my Geomorphology book there is a section on uplift caused by isostatic rebound and it goes over how the viscoplastic nature of the mantle and the mechanically detached asthenosphere allow a long ...
1
vote
1answer
31 views

How far a andesitic lava can flow and what is the speed?

For an effusive volcanic activity how far a andesitic lava can flow? What is the speed? Eruption amout 0.2 cubic km amount with 25 degree slope.
2
votes
0answers
15 views

Rainfall Frequency Analyses

I have monthly precipitation data and would like to create the frequency curve for the 2, 5, 10, 100 year storms. I have access to NetStorm, STORMS 2000, CFA (from Environment Canada) and HEC-SSP. ...
0
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0answers
12 views

Digital elevation model georeferencing with proj4 library

How to georeference a given DEM with unknown source in order to use it with other spatial projected data using python libraries?
1
vote
1answer
56 views

What are these basal rip up clasts in North Dakota?

This image appears to show that the shock wave from the KT asteroid turned the ground into rubble 3000 km away, else there was a rain of big rocks from the sky. What are the rip up clasts and what ...
2
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0answers
13 views

What is the generic term used for sensors that measure soil water tension?

Tensiometers are instruments used in measuring soil water matric potential (vadose zone water tension) by measuring the vacuum in a water-filled tube that contacts the soil through a porous cup: ...
-1
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0answers
38 views

Historical deforestation of Ireland and its implications

This wikipedia article: https://en.m.wikipedia.org/wiki/List_of_forests_in_Ireland claims that upon human arrival, Ireland was heavy forested, then due to heavy deforestation ,it became devoid of ...
-1
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0answers
37 views

I found this rock and its different [closed]

Fond this rock after ground had been moved on construction site. The first thing The first hing that caught my eye was the solid black color. When I picked it up was really heavy for it's size. (I ...
3
votes
1answer
50 views

Great circle in UTM coordinates

I've got a question about calculation of great circles in Cartesian coordinates: Is it possible to compute points along a great circle in UTM coordinates, i.e. given two points P1(easting1, northing1)...
1
vote
2answers
34 views

What does the unit cell of petitjeanite look like?

The question in Chemistry SE What is the crystal structure of bismuth oxyhydroxyphosphate (BOHP)? is about a catalyst synthesized by accident. A link in this comment points to the page https://www....
0
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0answers
33 views

cellphone heat generation [closed]

Cellphones = 1 billion phones (1,000,000,000) Environment = 1 billion KiloLiters water (1,000,000,000,000 Liters) Power = microwave radiation @ 1 watt/phone antenna Time period = 1 year / 365 days / ...
-1
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0answers
25 views

Downloading WRF Netcdf Files

Where can i download the netcdf file for wrf forecast. I want to make use of WRF-Python library to visualize the 500 mb height wind and many other products.
9
votes
1answer
59 views

Is Earth getting heavier or lighter?

There is meteoric material falling on the Earth constantly, as well as some protons and other light nuclei from the solar wind as well as from cosmic rays. At the same time Earth's atmosphere looses ...
3
votes
1answer
30 views

What is a Micro-Aethalometer; how do portable Black Carbon (BC) Monitors work?

The screenshot below is from MIT's Erik Velasco's presentation Particle exposure and dosage on public transport. My question is about the small, portable Black Carbon (BC) monitor. From my reading, ...
-1
votes
0answers
30 views

Weird looking rocks/fossils? [closed]

I found these two pieces while arrowhead hunting in northwest Ohio. I’ve never seen anything like it before, I’m not sure if it’s petrified wood or some sort of fossil. Any help would be greatly ...
3
votes
1answer
79 views

Are we going to enter a mini ice age in the next decade?

According to this article, a mini ice age could hit Earth by 2030 Mini Ice Age could hit Earth by 2030 and according to this video NASA admits mini ice age coming faster than anticipated. ...
1
vote
0answers
40 views

Which particles are classified as PM2.5? How exactly is this defined?

Question When discussing "PM2.5", is there any standardized understanding of which particles are or are not included? Is it everything that's 2.5 microns and smaller? Or Everything between 2.5 and 0....
1
vote
1answer
37 views

Hydrology- flow accumulation

I'm not specialist in hydrology, and I would be very grateful if you answer my question: What is flow accumulation in hydrology? Why algorithms used to calculate it over a raster DEM don't take ...
3
votes
2answers
68 views

Why is the bedrock buried so deeply in much of northern Minnesota?

Although parts of northern Minnesota have bedrock exposed at the surface (especially in the Boundary Waters area and along the short of Lake Superior), the more usual situation here is for the bedrock ...
5
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2answers
53 views

Rock Identification: clear, hues of yellow/orange. Washington State

I purchased this rock at an estate sale along with some rose quartz. The sellers had no information on it. My husband was able to break it today with a hammer, but I have no idea what the material is. ...
3
votes
1answer
55 views

Id request: Unusual shape, gritty texture hard rock

What are these rocks? We are importing dirt from local pool companies digging in the area. We live denton, tx (north texas). One company dumped about 4 loads of very red sandy loamy dirt and 3 loads ...

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