[Qgis-user] Processing of Groundwater Databases witkh QGIS

[mcav8r2003 at yahoo.com]

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Christine Schmidt <c.schmidt at geoTguide.de> wrote:

>Hi Giovanni,
>
>thanks for your hints !
>Most of the mentioned methods I know more or less.
>Important for the evaluation of an interpolation's reliability is a review 
>of the variogram and some statistical values. This should be also possible 
>in QGIS, as far as I could see until now - if not directly, then via R or a 
>GRASS plugin.
>
>This would be more than I have now in a proprietary groundwater database 
>management system with integrated interpolation functionality. That's why I 
>am looking for an alternative processing option.
>
>I am about to develop a subject for a master thesis in geoinformatics. First 
>of all I want to check what is present in the field in order to decide what 
>I can manage and contribute to proceed in this application field.
>
>tanto gracie e saluti,
>Christine
>
>
>
>
>-----Ursprüngliche Nachricht-----
>Von: "G. Allegri" <giohappy at gmail.com>
>Gesendet: 26.05.2011 00:21:46
>An: "Christine Schmidt" <c.schmidt at geotguide.de>
>Betreff: Re: Re: [Qgis-user] Processing of Groundwater Databases with QGIS
>
>>Spatial interpolation can be realized in many ways. There are lot
>>different methods, which fit different needs.
>>
>> - Inverse Distance Weighting (IDW)
>> - B-Splines
>> - Kriging
>> - Statistical simulations
>> - etc.
>>
>>As you know, none of them is correct without a knowledge of the
>>groundwater structure and stratygraphy. Anyway, in general, for this
>>kind of elaborations, IDW and kriging are mostly used.
>>
>>AFAIK, QGis can do IDW [1], while the other methods will need external
>>softwares like GRASS and R. In this case the related QGis plugins can
>>be used.
>>
>>If you can give us more details on the kind of interpolation you nedd,
>>we could give more advices.
>>Giovanni
>>
>>[1] 
>>http://www.gistutor.com/quantum-gis/20-intermediate-quantum-gis-tutorials/51-inverse-distance-weighting-idw-interpolation-using-qgis.html
>>
>>2011/5/25 Christine Schmidt <c.schmidt at geotguide.de>:
>>> Hi Bob,
>>> thanks for the feed back.
>>> Do you capture groundwater level data in boreholes and in monitoring 
>>> wells
>>> with this plugin to store it in a database? Sounds interesting although I
>>> wasn't searching exactly for that.
>>>
>>> Want to process data of existing groundwater databases with QGIS. 
>>> Processing
>>> means precisely the interpolation of groundwater level data and 
>>> laboratory
>>> analysis data for groundwater monitoring wells.
>>>
>>> I am checking what is already present in this field and what could 
>>> perhaps
>>> be contributed for an efficient workflow.
>>>
>>> Regards,
>>> Christine
>>>
>>>
>>>
>>> ________________________________
>>> Von: "Bob and Deb" <bobdebm at gmail.com>
>>> Gesendet: 25.05.2011 18:31:57
>>> An: "Christine Schmidt" <c.schmidt at geotguide.de>
>>> Betreff: Re: [Qgis-user] Processsing of Groundwater Databases with QGIS
>>>
>>> Hi Christine,
>>> I've been working on a borehole data entry plugin. We are using it to
>>> record historical high groundwater for use in liquefaction zone mapping.
>>>
>>> Are you looking for this kind of use cases?
>>>
>>> Regards,
>>> Bob
>>>
>>> On May 25, 2011 9:03 AM, "Christine Schmidt" <c.schmidt at geotguide.de> 
>>> wrote:
>>>> Dear QGIS community,
>>>>
>>>> would like to post my first question in this mailing list as follows:
>>>> a.. Does anybody know something about a project or use case of 
>>>> processing
>>>> groundwater databases with QGIS, exspecially in order to make 
>>>> interpolations
>>>> of point data (well data) ?
>>>> Got to know something similar in the context of GRASS 
>>>> (Carrera-Hernandez,
>>>> 2007). But what about QGIS in this application field ?
>>>>
>>>> Thanks a lot for any feedback,
>>>> warm regards,
>>>> Christine
>>>
>>>
>>> _______________________________________________
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>>> Qgis-user at lists.osgeo.org
>>> http://lists.osgeo.org/mailman/listinfo/qgis-user
>>>
>>>
>
>
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