Questions relating to the sea or ocean.

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1answer
22 views

Are there any large maritime data sets? [duplicate]

Needs to have from port, to port, and time stamps for each (arrival, departure times) Is there a dataset with all of this, or will I need to combine some other ones?
2
votes
1answer
25 views

KML/KMZ file <10MB for global shipping lanes?

I am trying to render an overlay of the world's shipping lanes using google KmlLayer class from the Javascript V3 API but most of the files I find are not rendered because of google's 10MB size limit. ...
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0answers
17 views

How to predict and map global warming on offshore / coastal areas

I wish to map solar radiance or sea surface temperature around the coast of the UK in order to predict how climate change will impact upon marine life around the UK. Initially I was going to use the ...
2
votes
0answers
129 views

Computing Shannon-Weiner biodiversity index using QGis

I wonder if anybody has some experience in calculating biodiversity index (such as Shannon-Weiner) using QGis. I am also interested for similar experiences using R scripts within QGis. The analysis ...
2
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0answers
303 views

Marine Traffic Routes Data Set

We are planning to implement a routing application to monitor marine traffic. The issue is that we either need a data set that has international sea traffic routes data or a clear definition of it. ...
2
votes
1answer
159 views

Extract all unique values from a RGB raster

I have a .png file in RGB format showing the intensity of ship traffic: For my analysis I need to convert it to a one-band raster with values between 0 and 1 where 0 means lowest density and 1 ...
1
vote
1answer
260 views

What is the coordinate system of this maritime natural gas field map?

The Israeli Ministry of Natural Infrastructure, Energy and Water Resources published a maritime map of the borders of a new natural gas field. The map is a part of a full license (PDF), a legal ...
1
vote
0answers
200 views

Help with running this ArcGIS AddIn for Parsing AIS Shipping Data to GDB?

I was wondering if someone could try the same Add-In with the same data and see if they have an error. I have downloaded the 'AIS Data Handler Pre-Processor' ...
1
vote
1answer
332 views

Volume of Land Below Sea Level

How could one use a GIS (or other appropriate system) to calculate the change in mean ocean levels across the world if all the land below sea level were flooded (Death Valley, Caspian Depression, Afar ...
3
votes
3answers
136 views

How does GIS intervene in ports and coastal areas?

I guess my question is pretty clear and yet broad, but what I was kind of hoping for is some insight on how GIS would be helpful in managing the ports or coastal areas. I can imagine it could serve ...
3
votes
0answers
225 views

Where can I get free nautical route planner Data?

Please read - and understand - before closing; I do not yet have an answer. Thanks. I made a mistake. I phrased my original question so that it could be answered by recommending an application. It ...
3
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2answers
2k views

Seeking free nautical route planner

Not actually a route planner, but it amounts to the same thing. I want to know the distance a vessel at sea must travel between two points. Obviously this isn't just a straight line thing, if there ...