Questions tagged [geography]

For questions that are concerned with or nested within the field of Geography; the study of lands, their features, and the relationships and complexities between and among peoples, the physical environment, and ecosystems.

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7
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1answer
2k views

If ALL the ice melted, what percentage of the Earth's surface would be water?

At the present time, about 70% of the earth's surface is liquid water (perhaps that includes floating ice around Antarctica, and the Arctic Ice cap). What percentage of the Earth's surface would be ...
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81 views

What would be the effects of a large forest fire on soil in other places?

Say a large forest fire took place. As I understand it, the smoke and ash would ride the wind and could be a health hazard even to people that are quite far away. My question is will it damage the ...
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1answer
247 views

What physical measurement / elevation is used to define Earth's radius?

Earth's radius is usually given as 6378137 meters (equatorial radius), its flattening is defined as 1/298.257223 (WGS84), and thus its polar radius is calculated as 6356752 meters. However, the ...
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What produces these distinct shapes in the Rub' al Khali seen from space?

update: Searching "Rub' al Khali Empty Quarter" found "Q2: What are sabkhas?" in https://www.geocaching.com/geocache/GC6BYQ0_rub-al-khali-the-empty-quarter which seems to be ...
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1answer
116 views

How to interpret these kind of coordinates?

I am currently working on a project with my university and ran into trouble. I am building an application for indoor localization and am currently trying to benchmark our implementation. To do this I ...
6
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1answer
218 views

Would more or less land be usable if global temperatures rose?

I think a large portion of the earth's land is unusable from being too cold and land that is too hot does not have enough water and dries out which could be fixed by diverging water to those areas. ...
6
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674 views

Why is the Ring of Fire there? [duplicate]

The Ring of Fire goes through the places that have the most earthquakes. Why is the Ring of Fire there, not somewhere else? Any help would be appreciated!
6
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1answer
343 views

Which mountains (or hills) are visible from both Boston and Rhode Island?

In the description of the Norse exploration of America, there are two places mentioned, "Hop" and "Straumfjord", with some relationship to the same mountains. E.g. The finding of Wineland the Good, p....
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417 views

Where is the Arctic Circle for civil and astronomical twilight?

The Polar Circles are located at 66°33′46.7″ North and South, defining the minimum latitudes at which, for at least one 24 hour period during the year, the limb of the Sun never becomes invisible ...
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2answers
247 views

Actual thickness of permafrost vs theoretical maximum possibly permafrost thickness

I came across a question in my notes about why the actual thickness of permafrost is much less than the theoretical maximum possible permafrost thickness value. The actual permafrost measure on sites ...
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1answer
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Why do the vast majority of the world's deserts fall on the tropic of capricorn or cancer?

I noticed on google maps today that the earth has two very distinct regions on which the majority of deserts are located. These fall on the tropic of capricorn and cancer. Illustrated here: What ...
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3answers
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Has Antarctica's coastline been completely mapped? (map discrepancies)

Looking at different world maps, I noticed that there is considerable variety in how the coastline of Antarctica is depicted (even when taking the different map projections into consideration). Are ...
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What is the distance between the tropics?

What is the distance between the tropic of cancer and the tropic of capricorn here on Earth? Now this would seem like I could simply google the answer to it and know the exact distance in miles (...
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What is this geomorphological form?

What is this geomorphological form located at Vitrolles, France? And how is it formed? It is like a 'raised flat land', or a base of a hill where the top 80% is cut, leaving only the wide, flat base.
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Is Australia the largest island?

I had participated in a quiz recently and one of the questions was 'which is the largest island in the world?'. I wrote Australia as the answer remembering that it was the 5th largest country in the ...
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1answer
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Where on Earth has the least changing temperature? [closed]

Is there a map that shows places where the temperature changes the least season to season? Is there a place on Earth where the temperature is the most constant in a comfortable range?
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2answers
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Why does NW coast of Scotland look like it does? (Similar to Norway, so different to other European coastlines)

When looking at a map of Europe, I always wonder why the North-West coast of Scotland has a very similar craggy outline to the NW coast of Norway. It is completely different to the smooth outline of ...
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What percentage of Earth's surface is arid?

Is there available information on how much of Earth surface is arid climate?
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3answers
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Difference between "Geology" and "Physical(Natural) Geography"?

I know "Geology" is a branch of "Natural sciences" and is for studying natural and physical phenomena related to earth. But "Physical Geography/Natural Geography" seems to study exactly the same thing....
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1answer
639 views

Why does more sunlight hits the equator than the ecliptic path?

I've always been told that the equator is the region on Earth that receives the most sunlight. But I wondered, since the ecliptic is the circular path that the Sun appears to follow over the course ...
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3answers
109 views

Transferring water using underground channel

I heard in tv show, there are water channels in underground like rivers or small channels! So I just wondered why don't we use such underground water channels to recharge the underground water of one ...
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1answer
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How to calculate residence time for an element in a reservoir?

The residence time for an element in a reservoir can be calculated by the reservoir size at steady state divided by the inflow or outflow rate. Given the following diagram, I need to calculate the ...
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2answers
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How far above sea level can you get on the equator?

Quite simply what is the highest point above sea level that is right on the equator, I figured it would be a mountain in the Ecuadorian Andes but the Kenyan highlands look to be a likely candidate as ...
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616 views

Half of Earth with most landmass

About 71% of the Earth's surface is covered with water and the remaining 29% is landmass*. If you could theoretically cut the planet in half, with the objective of producing a half with the most ...
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1answer
437 views

How much of Earth's land area has antipodal land area?

Using the site antipodesmap one can quickly explore what the opposite point of the earth to any location would be. That is, the surface point connected to this point by a straight line through the ...
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Topographic Maps

I have a question about a project I have for school. I have to make a topographic map of a made up island. I was wondering if the placement of the contour lines and the index lines are correct. Also ...
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Is it possible to infer the depth of a river from the shapes of the islands and the banks?

Look at the photo below. Presumably, the river bed is a smooth shape. Therefore, it should be possible to infer the depth of the water from the photo, right? I am not even an amateur of geo-science. ...
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What affects where a terrain will be rocky or grassy?

I’m working on a terrain generator and I now need to color the terrain to be rock, grass, or snow. Ignoring snow for now, at first I thought I’d make flatter areas grass and make steeper areas rock. ...
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Does storm seasonality vary with latitude?

Anecdotally, where I live in northern Europe, the weather seems to be stormier in winter, and this seems to be backed up by hard data. For example, https://www.sciencedirect.com/science/article/pii/...
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1answer
816 views

How much water will flow into the Caspian Sea if it is connected to the World Ocean?

I wonder how much benefit would a hydroelectrical project built on this inflow bring. There are projects to fill up the Erie, Salton, Qattara and the Dead Sea. But for the Caspian, there is only a ...
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293 views

How much change has there been to the shape of plate boundaries over geological time?

This is a question that has bothered me for many years. As a new teacher I was asked this question by a 12 year old in our plate tectonics class. I said I would go away and find out. I would really ...
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1answer
394 views

The Size Hierarchy of a Landmass

If we judge a hierarchy of a landmass by size, here is what, in my knowledge, it would have looked like, from largest to smallest: Continent Subcontinent ??? Island Islet In regards to size, is ...
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Is it possible to detect Coriolis effect using a Wind Rose?

I once learned in high school that the area where I used to live experiences the Coriolis effects of the air movement above the city. I never paid attention to this before, but I recently heard about ...
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1answer
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Is there any possible way that a tropical cyclone of any strength could form over land?

Most tropical cyclones rapidly weaken over land, however, given some conditions (such as very wet soil/ground cover and tropical lower atmospheric conditions) they can sustain themselves or even ...
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1answer
118 views

How does NASA get a 360 degrees texture map of Earth?

How does NASA get a 360 degrees texture map of Earth and separates it into specularity map, bump map etc? And how do they get the texture map of clouds separate?
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1answer
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Is there a measure for the "dominance" of a city's population?

since there are topological isolation as well as prominence as measures to describe how "dominant" a summit is in comparison to the ones surrounding it, I was thinking about a similar measure to ...
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0answers
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To Determine the Geographic center of a continent, is balance point the accepted method and is equivalent to finding the centroid?

This is not exactly a pure Earth Science question but I'm not sure GIS SE is a suitable place either. "The Google" suggested I watch CBS Sunday Morning's The debate over the geographical ...
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3answers
587 views

Eclipse, Hurricanes, Earthquake....Related Events?

Forgive my ignorance, I'm out of my depth. My wife has pointed to the upsurge climate and geological activity post Eclipse. My immediate response, at least inwardly, was to reject her suspicion. ...
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3answers
268 views

Is there a better system than latitudes and longitudes? [closed]

I am a student programmer, with very little knowledge of geography and am working with maps for a project, and have to convert latitudes and longitudes to points on a screen (map to pixels). So my ...
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1answer
163 views

Volcano in ocean?

Is it a volcano in this image ? The magnified version. I was browsing through earth images here when I spotted this orange thing. Is it some oceanic volcano? It may be an absurd question but is it ...
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2answers
11k views

Least populated time-zones [closed]

What are there any loneliest places on earth in term of population per time-zone? What is the answer for full hour time-zones (UTC+1,UTC+2..) and in other including for example UTC+4:30? SORRY I may ...
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2answers
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Is Mississippi and parts of Alabama, Tennessee, and Kentucky one giant island? [closed]

Apologies if this is a poorly written question, I'm writing this on my phone. I noticed that there were a lot of rather long rivers in the region in question, and I began to wonder just how connected ...
3
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1answer
118 views

Street and road data

Where do companies like Google and Yahoo and Mapquest get their street and road data? Is this a data source that the public has access to?
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2answers
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Resource for scientific maps?

I need an administrative division map of england for a motivation for some scientific workshop. I don't want to cite wikipedia for this. Sadly I can't find any official resources and I don't really ...
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1answer
202 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)...
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2answers
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Is this a contradiction in Wikipedia's definition of temperate zone?

Under the Wikipedia article Temperate climate Temperate climate in the introduction is describes: In geography, the temperate or tepid climates of Earth occur in the middle latitudes, which span ...
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1answer
71 views

Is there any single, generally accepted statistic describing the flatness of a given territory?

I'm very interested in Russian history, and this led me the other day to look at a beautiful painting of the famous Vladimir Highway. The painting is famous in its own right, and is said to express ...
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1answer
337 views

Can I regard the grayscale of a RGB color image as a panchromatic image?

Here I have a remote sensing dataset with many bands (e.g., blue, green, red, ...), and I use the blue, green and red bands to get a true color image. I want to know if I can get a panchromatic band ...
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1answer
73 views

What was the size of the Aral sea in year 1000 CE?

I understand that since the rise of the Soviet Union the Aral sea has dried up more and more due to irrigation from rivers diverting its water to other areas for the sake of agriculture. But is it ...
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1answer
101 views

Splitting the Earth's emerged land in two equal parts

Is there a meridian that has exactly as much emerged land area 180° on its East than 180° on its West (on the assumption that it could exist...)? If there is no meridian, is there any other great ...