All Questions

1
vote
0answers
11 views

What is brown carbon?

There is a lot of interest in brown carbon in the atmospheric science community these days. There is a paper in the journal, "Atmospheric Chemistry and Physics" titled, "Black carbon or brown carbon? ...
0
votes
0answers
16 views

Young researcher hoping to volunteer for Antarctica fieldwork

I am a postdoctoral scholar who is interested participating in Antarctica fieldwork/exploration as a volunteer. My background is in biology, but I am happy to participate in any fieldwork ...
1
vote
0answers
14 views

What's the largest known range of natural temperature variations of human inhabited Earth across history?

I was reading about the ice age when temperature dropped 11 celsius degrees in relation with our current temperature. Then I found another article which says the temperature fluctuated 15 degree ...
1
vote
1answer
27 views

Peninsula vs Cape [on hold]

I know that Peninsula is much larger than a cape, but is there a definite way to differentiate them? I.e. by area- if the total area is larger than 30 sqkm, any headland is classified as peninsula..
0
votes
0answers
12 views

what kind of rock is this? soo strange [on hold]

What is this? this rock is so strange. White inside but was encased with something greenish brown.
0
votes
1answer
14 views

Sea cave vs Sea arch

How do you distinguish sea cave from sea arch? If I want to classify a crack of sea cliff as sea cave, has it to have a dead end? Would you call a geological formation as a sea cave even a kayak can ...
0
votes
0answers
24 views

I found this small round heavy rock in a box of my dad’s old army stuff [on hold]

I found this seavy black silvery rock found in a box of my dad’s old army stuff. He was stationed in Arizona sometime in the 50’s. Not sure if it’s from there or just happened to be in that box.
0
votes
0answers
22 views

Hydrology dam barges hit lockndam [on hold]

https://www.4029tv.com/article/webbers-falls-spaniard-creek-oklahoma-arkansas-river/27563171 Hydrology Can u tell if pressure is going to cause more problems?
1
vote
1answer
45 views

What could cause a turn from global warming to global cooling?

Except a hypothesized orbital forcing! Ice cores shows that there are several irregular sharp temperature peaks in between of the big 100,000 years glaciations. What could cause those peaks? Almost ...
2
votes
0answers
41 views

Initiation of Rossby waves during MJO

I am trying to understand the basic dynamics of MJO, where I find several studies which relate it to the initiation of equatorial Rossby and Kelvin waves. Though MJO is an eastward propagating wave, I ...
3
votes
0answers
37 views

Why can't we dig deeper?

I recently read on another SE site that there's a limitation on how deep we can dig into the earth. A Google search reveals that temperature is the problem. I quote from a Popular Mechanics article ...
5
votes
2answers
30 views

Can I interpolate rainfall data from stations outside of watershed for the watershed?

I have only few station inside the watershed so I want to use the stations outside if I can to get better results
0
votes
0answers
31 views

Found this, need help identifying [on hold]

Rock found at ord river in Kununurra, Australia, main body of rock compound quiet heavy, opened rock up by smashing it, found crystals inside (white) in a cocoon chamber, found yellow/ greenish ...
3
votes
0answers
30 views

Coral Reef and Volcanic Islands

I have two questions regarding coral reef and volcanic islands. When a new volcanic island is formed, how much time generaly passes before a coral reef starts to form around the island? Another ...
0
votes
0answers
27 views

Help identify my rock please? [on hold]

found this in the backyard, any ideas which type it is?
0
votes
1answer
29 views

Is this a petrified reptile? [on hold]

River rock from colorado with snake pattern is this a reptile?
0
votes
1answer
23 views

UK Mineral identification help [on hold]

Can anyone help me identify these minerals please? I found them on a beach in northern England. The first has tiny angular crystals, some slightly pinkish maybe in certain lighting conditions but grey ...
0
votes
0answers
24 views

Identify this rock [on hold]

please identify this rock. I found it on a Maine beach.
4
votes
2answers
46 views

Is there a place where the sea floor descends into the mantle of the earth?

My understanding of plate tectonics is that in the middle of the oceans magma rises from the mantle of the earth, cools and then spreads out, building up the sea floor. These places are pretty obvious ...
0
votes
0answers
24 views

Can you please help me to identify this thing I found inside a rock in the Almanzora riverbed Spain

Can someone please help me identify this thing I found inside a rock in the Almanzora riverbed Spain
2
votes
0answers
37 views

Characteristics of saddle points in stream line charts

I am trying to locate saddle points or commonly known as "col" in synoptic meteorology. This is "z" in the following figure. References Here are some of the references regarding this. a). http://www....
4
votes
0answers
24 views

What exactly are “ambient aerosols”?

I see this term being used everywhere, but I have not been able to find a formal definition for "ambient aerosols".
2
votes
3answers
72 views

Looking for counter-arguments concerning the melting of glaciers in the alps in the context of global warming

I've recently listend to a talk of Prof. Gernot Patzelt, Austrian Geographer and High Altitude Mountain Researcher. In this talk he describes that scientists find rests of trees and moorland apearing ...
0
votes
0answers
77 views

What rock is this? (found in fields)

Found it in fields today. Just plain field and earth for growing with low elevation. No clue what rock this is. Maybe even some metal? 14cm x 10cm Weighs about 1kg 5-6 Mohs hardness After cleaning ...
0
votes
0answers
10 views

3D fold coverage calculation

I have a configuration for which the nominal fold is 16 (i.e. 48 channel streamer, 1m group interval, 1.5m SP interval). I have been asked to calculate the fold coverage with the following criteria: ...
1
vote
1answer
24 views

If matter is constantly being cycled through an ecosystem, does that mean a given ecosystem has a fixed mass?

Due to the food chain and the cycle of life, matter is constantly moved between plants, primary consumers, secondary consumers, and so on, until the consumers die, giving matter they consumed back to ...
2
votes
1answer
43 views

Locating shearlines or deformation zones in a map

I am looking for a way to detect shearlines or confluence regions such as that shown in the figure below (red dashed line). I was able to derive the stretching, shear, and total deformations. The ...
1
vote
0answers
23 views

How to transform level 2 satellite retrievals to level 3 gridded data

Usually, I use level-3 gridded satellite data to analyze the spatial and temporal patterns of atmospheric compositions. However, there were some data sources which only afford level 2 product. For ...
5
votes
0answers
23 views

Is there a widely accepted reason for the formation of tafoni?

Expansion of tafoni seems to be based on weathering (seems reasonable enough.) But what creates them in the first place? There are a number of explanations online (Wikipedia lists eight plausible ...
0
votes
0answers
22 views

Any thoughts about this? Fossil? Some sort of relic. Bone? [on hold]

Found in northwestern Oregon. Willamette valley.
0
votes
0answers
16 views

What is an inversion

What is an inversion? What happens to the sediment in between? I understand that as the crusts move together a bulging appears.
0
votes
0answers
12 views

Moisture flux convergence/divergence calculation in Grads

I want to calculate moisture flux divergence/convergence in 850 hpa for the summer and I have monthly mean gridded data sdfopen shum.mon.mean.nc sdfopen uwind.mon.mean.nc sdfopen vwind.mon.mean.nc ...
1
vote
0answers
21 views

Which is worse, plastic or styrofoam cups?

Which disposable cup between plastic and styrofoam harm the environment the most? Which is the most unhealthy to drink from?
5
votes
1answer
46 views

Is sterescope still used to do cartography with orthophotography?

I used this tool at my degree a couple of lusters ago to do cartography with aerial orthophotos. We used it on cartography and geomorphology subjets. Source: gumtree.com The method consists ...
0
votes
0answers
24 views

Estimating Diurnal Temperature Changes for a region due to Climate change?

I am working on UHI related studies. I am wondering is it possible to estimate how diurnal temperature cycle would change for a typical day of given season. Edit: Based on comment I am trying to add ...
2
votes
0answers
35 views

Is it an egg? What type of rock please? [on hold]

This stone was found by my uncle in Western Queensland. It’s light brown in colour and smooth. It's very heavy for its size. 780 grams. Pocket knife doesn’t scratch it. many thanks.
1
vote
0answers
18 views

Turbulence strength from turbulence intensity?

I do not have a lot of knowledge in aerodynamics but I need to be able to derive turbulence strength (Cv2 and Ct2 - so called turbulence structural parameters I think) from turbulence intensity. Does ...
1
vote
1answer
44 views

Help me identify my rock is it jade?

Found this rock it looks like a vein of Jade but I have no idea. This is the inside of the rock. I found it already broke the rock is wet in the pic. It's is a hard rough texture and the green in the ...
0
votes
2answers
62 views

Error trying to download ERA5 data: Exception: Missing/incomplete configuration file: C:\Users\username/.cdsapirc

I am new with Python so please be kind. I want to download data from ERA5 and so far I have installed the CDS API package and followed all the instructions from https://cds.climate.copernicus.eu/api-...
9
votes
0answers
98 views

Rock identification?

This stone is part of a rock mass found in one of the plains of Iran. There are no rocky mountains around these rocks. I'm geologist and I guess it's part of the meteorite, what do you think? Color: ...
3
votes
0answers
29 views

Amount of scattered vs. direct UV light from the Sun

I was wondering about the common saying that on a sunny, cloud-free day, depending on location, you can get a sunburn even when spending the whole day in the shadows. Already our blue sky provides ...
0
votes
0answers
21 views

Can anyone tell me what this is [closed]

Not sure what this is found in Oklahoma
1
vote
1answer
56 views

How big of an event is needed to trigger a long winter?

Could a small meteor or natural nuclear explosion melt an ice cap on Earth to trigger a mini ice age without the event being observed by people? Can the Earth have an overlaying thermal cycle that ...
-3
votes
0answers
48 views

What about a countercurrent system of zig zag trenches in The Sahara [closed]

My idea is to dig trenches funded by big oil, which will be like a zig zag, up and down, moving across, and the sea could flood in from the med or the Atlantic to the Sahara. The question is if sea ...
0
votes
0answers
38 views

Is this “rock” hiding a fossil of a claw from a reptile

[][1 I found this on a beach could it be a fossil of a claw?
1
vote
1answer
23 views

reverse time migration for wave equation PDE using SBP-SAT

I'm stuck implementing a reverse time migration technique, the PDE(partial differential equation) being implemented is an acoustic wave equation, The numerical method being used is a FD(finite ...
1
vote
0answers
44 views

FOSSILZED WOODEN TOOL [closed]

My son found a fossil on the beach at the foot of the cliff face at Robin Hoods Bay in the UK. It is definitely a fossilized piece of wood, but we would like to know what type, and also if it was ...
5
votes
1answer
107 views

Are these plane trails seen from satellite

Here are photos from West of Normandy, at 7-9am after sunrise on the 14th of may, from the visible satellite. It's a bit strange that they are visible from space, they are 2-3 miles wide? Are they jet ...
1
vote
0answers
37 views

what type of rock is this? blue/green and brown [closed]

I found this rock while up in the mountains and I have no idea what type of rock it is.
0
votes
0answers
24 views

What are “young thrust faults” and why are they significant on the Moon?

The abstract of the new Nature Geoscience paper Shallow seismic activity and young thrust faults on the Moon reads: The discovery of young thrust faults on the Moon is evidence of recent tectonic ...

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