[Qgis-user] Processing of Groundwater Databases with QGIS

[Christine Schmidt]

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
>>
>>
>> _______________________________________________
>> Qgis-user mailing list
>> Qgis-user at lists.osgeo.org
>> http://lists.osgeo.org/mailman/listinfo/qgis-user
>>
>>


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