Bathymetry is the study of underwater depth of lake or ocean floors.

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producing a bathymetric map in qgis with limited depths measurements

i am new to your community and hope you to find tips on how to work with the following project. i want to produce a bathemetric map (depths profile) of a water area. I do have aerial images and 3 ...
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49 views

Whats the best way to create bathymetric contour lines?

I have a raster dataset with both Topographic and Bathymetric stored in it. What is the best way to create exact contours of the lake-bed? This becomes tricky when I want to make the contour for depth ...
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55 views

Web mapping service with GEBCO bathymetry data

Is there any open web mapping service provide map tiles with GEBCO bathymetry data. As far I know Only Google uses GEBCO bathymetrydata for ocean floor model. Others uses ocean as plain blue. I need a ...
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60 views

Need shapefile for worldwide bathymetry [duplicate]

I need a (free, no cost) shapefile for bathymetry of entire world, specifically from depths of zero to 200 metres, ideally in 50 or 100 m contour intervals. Has to be a shapefile. Help please!
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Bathymetry dataset of Italy

I am looking for a dataset of bathymetrics data of Italy. I shall use them into an application for collision avoidance of vessels into the port. I need to know how deep the sea bottom is in each ...
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27 views

how to interpolate river bathymetry/heights in qgis/grass [duplicate]

Hi all and thanks for your help. I have a csv file containing a set of x,y,z points for river bottom depths. When trying to interpolate the data in scientific computing software (ie, matlab) I have a ...
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1answer
78 views

Removing Image Stripes / Scan Line errors

First post here! Anyway, I have some seabed bathymetry data derived from seismic reflection profiles in a 2.5D dataset (closely spaced lines). The data was gridded by another worker in SMT Kingdom ...
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89 views

Turn bathymetry into elevation in arcGIS?

My raster is in depth of bathymetry however when this is shown in 3D it reverses the elevation making the deepest points the highest in elevation and the shallowest points the deepest. This makes a ...
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2answers
246 views

Where can I get detailed Bathymetry data for Ontario

I need detailed Bathymetric data covering water bodies (including smaller ones) in the Province of Ontario. Our Provincial Government has it, but the use of the data are restricted due to liability ...
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1answer
270 views

Create a 3D surface from xyz csv using GRASS

Apologies if this is a repeat question guys. I am trying to create a 3D bathymetry surface from xyz data. There is approximately 300,000 points with lat, long and z (depth data). The data is sonar ...
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3answers
205 views

Multibeam bathymetry xyz data 53000000 features arcgis 9.3

Im working with an xyz file that has 53000000 points, i have only been able to see this in Microsoft access, because in txt its says that the amount of data its too large. So what i´ve tried to do: ...
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6answers
352 views

Interpolation of multibeam bathymetry

I'm trying to make a 3D map with multi-beam bathymetry (65536 features, xyz), but it seems that the interpolation methods are too rigid. I need to smooth the data so it looks more natural and ...
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2answers
283 views

Importing MaxSea 3D Database to PostGIS

I am currently working on a project, where I combine several MaxSea 3D databases, which contain depth measurements made by the echosounder onboard on a ship. The idea is to combine these databases to ...
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1answer
59 views

bathymetry for a UK location

I'm wondering whether I can get water depth for the mudflats at Lindisfarne, NE England, UK: http://maps.google.com/?ie=UTF8&hq=&ll=55.65,-1.821&z=13 The mudflats are intertidal, so I'm ...
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0answers
199 views

Best method to convert CSV file of lat/lon and depth data to bathymetry polygon?

I'm trying to create bathymetry polygons based on lat/long and depth data. I have tried several methods and the resulting polygons are clunky. Make XY Event Layer-->Copy Features--> Project--> ...
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166 views

shortest distance between a raster and another raster

i am using arcgis 10.1 i want to calculate the shortest distance between a raster and another raster. i have a bathymetric raster and an underlying fault plane raster. for each bathy raster cell, i ...
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3answers
381 views

Looking for bathymetry data for Lake Sakakawea in North Dakota

Navionics has a nice web map that has some incomplete coverage of Lake Sakakawea. Garmin's BlueChart looks to have something for about $160, but appears to be only compatible with GPS units. Don't ...
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2answers
2k views

Detailed Bathymetric/Bathymetry contour data (0-200M)

I am looking for free Bathymetric contour data in shapefile format for depths between 0-200 meters for North America. I prefer contours at 10 meter increments, but will take whatever I can get. I ...
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1answer
385 views

How to import GEBCO bathymetry into QGIS?

I'm experiencing problems with the import of bathymetry data in QGIS, which I downloaded freely from GEBCO or NOAA. The problem is that if I import the grid (either with .nc or .asc extension, or if I ...
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1answer
431 views

Where can I download a xyz bathymetry file of the Northwest Atlantic?

I'm looking to download the bathymetry of the Northwest Atlantic ocean as a txt file or any other file format that I can easily upload and use in R. I once used the Global topography - Scripps ...
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2answers
1k views

How to use SRTM30 Plus data with QGIS or other GIS tool?

I am trying to access the new Bathymetry data published here: http://topex.ucsd.edu/WWW_html/srtm30_plus.html Is there a way QGIS or similar tool can read these files. Nothing seems to be working, ...
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1answer
206 views

Plotting Smith and Sandwell global seafloor topography grids

Does anybody have any experience with plotting Smith & Sandwell 2-minute Mercator-projected grids in ArcGIS? I've downloaded one in two formats: ers and img. I've found tools for processing .img ...
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1answer
59 views

Where can I obtain Water Virtual Flow Segments for Minnesota?

This is a cross-border task. I already have this data for Ontario, Canada but I also need to complete the model for a large lake that is essentially split in half between the two countries. ...
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4answers
1k views

Where can I find free Bathymetric data for Indian Ocean?

I am looking for bathymetric data, to place in a map of India for visualization only. I don't really need very high resolution data, since the the map will be at a very small scale: Maybe 1:1Million ...
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551 views

3D visualization for marine navigation

Is there anyone who has some experience or knowledge on 3D visualization and/or GIS softwares capable of displaying 3D bathymetric data and 3D ship model together? Nearly all GIS softwares work with ...
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6answers
2k views

Looking for interpolation tool to produce river bathymetry (topography) from sections

As per the title, I am looking for a tool that can produce bathymetry of a river from cross sections. Although people who may know such tools probably will not need any explanation why this kind of ...
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2k views

Hardware and software for capturing bathymetric lake elevations?

What hardware and software would you use for capturing bathymetric elevations (depth) in inland waterbodies (lakes and rivers)? Your device and software budget is $1,000. The budget is a soft ...