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Questions tagged [mapping]

The process of translating spatially organized knowledge of an area or place into a geographic medium. Can include the production of physical/paper maps and atlases, geocoded data, or interactive virtual maps produced using Geographic Information Systems (GIS).

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How would one go about drawing the contour lines for this map in order to draw the cross section?

Good Day. We Received this map as practice for our Geology university module and I have no idea how to draw the strike lines where the different heights intersect the different rock types in order to ...
KaapseDwergie2020's user avatar
4 votes
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272 views

Where on Earth does the wind only blow one way?

Is there a place on Earth that if the wind is blowing its only blowing (here is the twist) in the same direction from the ground to 53 km high?
Muze's user avatar
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Investigating the "Leesburg split" rainfall anomaly

I've spent some time in the Leesburg, Virginia (USA) area and I've noticed that whenever a line of thunderstorms approaches the area, it frequently splits and goes around a particular spot just ...
SlowMagic's user avatar
3 votes
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How is drainage divide defined upstream of bifurcation?

Recently, I visited the Divide Creek birfucation in Canada where a creek bifurcates with one arm flowing to Pacific and the other to Arctic Ocean and I was wondering how does this rather rare ...
Jen's user avatar
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3 votes
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Crustal age global map

I've been searching for a map depicting the age of each part of the crust for a long time. I'm not a geologist but I'm a physicist so I would like to know about the most up-to-date and accurate ...
Swike's user avatar
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3 votes
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Coloring maps by feature orientation

I live in the SF Bay Area where many, but not all, geological features are oriented parallel to the San Andreas Fault. I was wondering if there’s a type of map where ridges are colored by compass ...
ed94133's user avatar
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Does Martin Ledge uncover?

In the current Wikipedia article for Martin Ledge it reads: "Martin Ledge is small barren rocks that barely stick out of the waters". However, the NOAA chart for the area shows a low tide depth of 16 ...
Tyler Durden's user avatar
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Drawing strike lines when given strike and dip

Map 1 shows a hillside with topographic contours at 50 m intervals. At Locality A a coal seam is exposed at the surface. The strike and dip of the seam is as indicated on the map. Use this information ...
Mizza's user avatar
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2 votes
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Difference between Hillshading and Terrain Resource Information Management

I am picking up on remote sensing. I came across a paper where they use the shaded relief model from Terrain Resource Information Management (TRIM) for hillshading. However, is it the same as the ...
kc_nul's user avatar
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2 votes
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65 views

Form Lines from Strike and Dip measurements

I am looking to draw form lines on this map based on the strike and dip measurements taken on site. From what I have gathered it is an anticline with a possible second fault to the right hand side. ...
L Morgan's user avatar
2 votes
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31 views

Which variogram method for ordinary kriging?

I want to plot atmospheric data (2H and 18O) on a map and use ordinary kriging for the interpolation. Now I have the question how to quantify which variogram method (Gaussian, exponential spherical) I ...
Weiss's user avatar
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Literature on thematic 4D maps

I need to understand more about thematic 4D mapping. I would roughly classify it as a method of cartography. In particular I want to do research on what software is being used to create thematic 4D ...
TheKidsWantDjent's user avatar
1 vote
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Temperature Data Software

I'm looking to create a map of the U.S. that depicts mean winter and summer temperatures. Is there a software suitable for this? I found CSVs of data here: https://www.ncei.noaa.gov/data/normals-daily/...
Test's user avatar
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1 vote
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Hemispheres with some property

You surely know the "water hemisphere" of Earth. Have other hemispheres been computed? (For example, Wiki notes "population hemisphere" coincides more or less with the "land ...
Hauke Reddmann's user avatar
1 vote
0 answers
513 views

How to plot quiver (current/wind arrows) plot on a basemap

and thank you for answering I am trying to plot a quiver plot on a basemap (The basemap has to be a good quality map such as openstreetmap) and I can't find a way to do it. There are some examples on ...
yair suari's user avatar
1 vote
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28 views

Data for Isoscape

I am in the process of creating an isoscape for the stable isotopes in precipitation (2H and 18O). Does anyone know of any other databases besides GNIP (IAEA) that have further entries (especially ...
Weiss's user avatar
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1 vote
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Complex interpolation for Isotopic data

I have another question, is there a package that interpolates precipitation data taking into account mountains and oceans? I have so far used Numpy and Basemap but as you can see in the code, the data ...
Weiss's user avatar
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1 vote
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153 views

What is the Offset Corner Latitude and Longtitude?

I tried to understand about Offset Corner Latitude Point 1,2,3,4 and Offset Corner Longitude Point 1,2,3,4. But I couldn't understand what is it? For example, I have the Frame center Latitude and ...
HSD's user avatar
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How can a tidal height be lower than 'Chart Datum'/'LAT' e.g 'Lowest Astronomical Tide'?

We just had a very low low tide in the UK, an equinoctial tide on the 12th of March that was calculated as -0.13m above chart datum, i.e 13cm below the 'Lowest Astronomical Tide'. Check here for tidal ...
Captainpadlock's user avatar
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42 views

How to I change polar projection to equirectangular?

Specifically these maps. https://imgur.com/a/Pvpm2Zy#dpWSjah The image and mapping apps I have can't do want I want with the techniques I know, on the map like this. But If I could convert it to ...
The Great One's user avatar
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What does the value 254 mean on this map?

NASA has a land cover map that tells you what type of biome is on the Earth's surface: here There are 17 different land types. If you download one of the two tiffs here and zoom into a couple of ...
Zebrafish's user avatar
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Map showing the change in precipitation intensity

Hi I need a map for the North American region that shows the change in rainfall intensity. Unfortunately, I can only find maps like this map Unfortunately, these are not detailed to use.
Weiss's user avatar
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0 votes
0 answers
61 views

Map showing the typical rainfall paths

Hello I am looking for a map that shows the typical (typical for the last 50 years) precipitation paths in the Northern Hemisphere! I already know this map, but it only shows a momentary event and ...
Weiss's user avatar
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0 votes
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Algorithm for the interpolation?

I have managed to plot various points on a map and interpolate with ordinary kriging. However, my data does not look anything like it should. Do I need to use an algorithm to fill in the missing data? ...
Weiss's user avatar
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Isotope fractionations

The isotopic fractionations in the precipitate are equilibrium fractionations and the evolution of a system can be described using Rayleigh destillation! The fractionation type during evaporation is ...
Weiss's user avatar
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