About CASOAR  

CASOAR : User's guide

Initialy designed by Thierry Souriot (CNRS 2007-2012).
Web Manager Yannick GUEHENNEUX
Please contact : Y.Guehenneux for technical questions,
and J.L.Froger for scientific questions.

Last update 2019/06/19

Introduction - Acknowledgements - User's guide - Know bugs - History - Access and User Charter

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  • If you are member of one of our project, you should have a login name to enter into CASOAR. Go to the home page and fell fields User/Password and click on label.


  • If you are a simple visitor, you could enter into CASOAR with restricted possibilities. Go to the home page and click on label.


  • If you are member of one of our project and if you don't have login or if you have forgot the password, go to the home page and click on label.
    Enter the requested field (Full name, email adress and project) and submit.
    We will reply by email sending a user name and a password as soon as possible.

In any case, your browser should accept cookies for this adress.


  • To quit CASOAR , don't forget to click on [LOGOUT] in the menu barre.
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Then you should arrived on the following page and, at this stage, i suggest you to tape F11 on your keyboard to switch in full screen.

IMPORTANT: parameters in selectors zone are automatically save from one session to an over, including dates, orbit, etc.... Many unexpected result comes from this. Don't forget to reset selectors. All selector fields have a [RESET] label wich put preset value for all parameters which are in most off case null.

Folder selector

  • Open you project folder in this zone.
  • Select the type of data you want.
    Several type could be select at the same time but results table will be display separatly.
  • At list, two menu appears in the lower part of this column.

General Selector :

  • If your project concerne a large area, you can reduce the research area by enter.
    • geographical "Coordinates" in degree decimal.
    • or selecting predefined "Area" automatically adapted to the project.
    • or selecting particular "Target" (i.e. volcano) automatically adapted to the project.
  • For some project are defined "Events" such as eruption. More, you could select it here in the mode "Exclusive" if you want images into the event, for exemple in this condition, master and slave would have an acquissition date include into the event.
  • "Acquisistion Date " correspond to the date when the Satellite aquired the image or the date of computing the interferrogram.
  • "Reception Date" correspond to the date of registration of the image into the database.

Those selections are not imply and there is no control on the coherence beetween parameters.
for exemple, if you select an area outside select coordinates, nothing could appear.

Make particular attention to date, this is one of the main factors of error.

Data type Selector :

  • By default, nothing are selected at the first stage. In most selector, you the possiblity to select all by click the button , and to revers by click . Be carefull using select all, it take a long time to charge thousand images.
  • Modified a parameter automatiquely update the table of selected data.
  • Each type of data has it owns parameters of seelction and we won't describes all of them in this page.

Lower part of Selector area :

  • is not very usefull because most of the time its automatical when a parameter change.
  • open the utility to import a selection parameters file (.kzr).
  • open the utility to export all selection parameters into a file (.kzr). Those file could be send by mail to allow an other user to see the same selection.

Table of Selected Data :

This zone display the result of selectors into Tables containig main parameters of images depending of the type of data. The header remains the data type and the number of data found.

  • add this data into a list name "SHOPCART". This list is used either to memorize personnal list of data, either to order data in the [SHOPCART] page.
  • open a new windows name Preview which display a largest preview of data, a location map and a wider number of parameters.

Preview Zone :

This zone display icons of selected data. Clicking on icons has the same action that .

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Just as previous [TABLE SELECTOR], you have same selector areas to the left and preview zone to the right. In the center a (or more) map are generated using Google-API to diplay the position of data. You can see more information by checking the and the link inside the contextual label.

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IMPORTANT! At this stage, datas are only selected but not ordered.

  • Select your transfert mode using on of this buttons , or .
  • Validate your request using .
  • Administrators will send you by email a downlable adress when your order will be available.
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You can modifie all your personnal informations in the page [PERSO INFO] except groups and autorizations.

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Know bugs

Know bugsLevel Suspected reasonTemporary solution
impossible to login with Konkeror. Medium unknown Use Firefox, Safari or Opera.
[Map Selection]. Low google API reload page.

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