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

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Creating Dem from cross sections

I have a question I appreciate that if someone can help me I have a DEM in arcmap and cross section of a river which flows on the Dem in Hecras. I now the cross sections are more accurate. I want to ...
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Trying to make a depth map of a lake but can't get the contours to show up right

I am trying to make a depth map of a lake. I am using the contour plugin to generate contour lines. The problem I am having is that when I use the plugin the contours come out right except on the ...
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2answers
68 views

QGIS, interpolate along an irregular shape or line to create a DEM

Before anyone marks this as a duplicate, hear me out. This question: Interpolation: irregular shape, merging DEM's asks my question but not for QGIS. Furthermore, the answer is vague and not ...
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Lake Victoria bathymetric data

I am trying to find bathymetry for Lake Victoria (or portions). Any GIS format and almost any resolution will do. As a last resort a hydrographic chart will suffice.
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40 views

using r.volume model GRASS plugin in QGIS

I am calculating volume of bathymetric data in the form of a clipped raster in GRASS with a Custom Lambert projection centered around 70degrees North, using the module r.volume in GRASS. Side note: ...
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Should i use cell registered or grid registered bathymetric data in QGIS?

I am planning on calculating habitat volume over great ocean distances and have the choice to use either Grid or cell registered data, downloadable from this link. ...
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179 views

Cutting out depth information in raster. Calculating volume in Qgis

I am trying to calculate habitat volume for around 30 fish stocks in Qgis. I have habitat areas (shape files) and Bathymetric information (.tif file). I believe I can calculate the entire volume of ...
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1answer
79 views

data source for worldwide cross-sections of topographic and bathymetric for woodworking art project?

i am a decent r programmer and statistician, i am able to work with data sets pretty well. i am less familiar with GIS tools, but if given a shapefile i can certainly plot political borders and ...
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17 views

Can I upload an LPA file (Long Profile) to QGIS

I have a .lpa file that I'd like to upload to QGIS - Can this be done and if so, how? Thanks!
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88 views

QGIS contour plugin exception struck help

I am a fisheries biologist and I am just getting started with QGIS. I took a few GIS classes in college so my GIS knowledge is not extremely high. On to my question. I am trying to make a depth map ...
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35 views

QGIS - Obtain elevation profile [duplicate]

I wish to obtain a bathymetry profile along the selected path (Google Earth calls this feature "elevation profile". Can QGIS 2.2 provide this? I created a layer using the WMS service to load the ...
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40 views

QGIS - View bathymetry info in the status bar

PolyGo suggested that I split my earlier twofold question into separate questions. So: I am new to QGIS or any GIS software so please forgive me if the answer is obvious to you. I wish to view the ...
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30 views

QGIS Bathymetry Display, Bathymetry along a path [duplicate]

This post has two related questions. I am new to QGIS or any GIS software so please forgive me if the answer is obvious. I wish to view the Bathymetry point for any given coordinates (e.g. as I move ...
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95 views

How to colour contour lines in .shp file when the lines are not meeting in QGIS?

I am doing bathymetry analysis, where I would like to color the contours one by one in the case land is rising (or sea level going down). There is a comprehensive explanation about coloring contours ...
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90 views

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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99 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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94 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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97 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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67 views

Bathymetry dataset of Italy

I am looking for a dataset of bathymetry data of Italy. I shall use it in an application for collision avoidance of vessels coming into the port. I need to know how deep the sea bottom is at each ...
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29 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
130 views

Removing Image Stripes / Scan Line errors

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 suite; I'm not familiar ...
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131 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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467 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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447 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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297 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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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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407 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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66 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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238 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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211 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
547 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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4k 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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513 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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518 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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3answers
2k 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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235 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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63 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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603 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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6answers
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 ...