MARiS Help

Welcome to the MARIS help page. Please see the relevant section below for help.

Search Page

This is where you enter the criteria for your search of the MARIS data. The following fields are mandatory for the search: either Region or Coordinates; Sample Type and Tracer. The Submit button at the bottom of the pages will remain disabled until the mandatory criteria have been selected.
To begin, select either the "Search by Region" or the "Search by Coordinates" radio button. If you select to "Search by Region", the Region and Subregion drop-down lists become active and you can select from these drop-downs. Selecting a Subregion is optional and narrows down the number of results returned. See next section on how to "Search by Coordinates".
Next select a "Sample Type" from the drop-down list. Changing the sample type, causes the fields beneath the drop-down to change. This allows you to enter criteria relevant to the selected sample type. You can further refine your search by entering criteria in these fields but they are not mandatory.
Finally select a "Tracer" from the drop-down list. This is a mandatory field.

Search by Coordinates

If you would rather search by coordinates than by region, check the "Search by Coordinates" radio button. This will enable the coordinates fields. You can manually enter the degrees, minutes and direction into the fields or you can use a map helper. Click on the "Select Map Coordinates" link. This will pop-up a window displaying a map of the world. You can zoom in on the region that you are interested in by drawing a rectangle with your mouse and releasing. As you draw the rectangular area, the coordinates for that area are displayed on the pop-up window status bar. Once you have selected your region, click the "Return" button to close the pop-up window and return to the Search criteria page. You will find that the coordinates that you selected in the map are now automatically entered in the coordinates fields.
If you have already selected a sample type and tracer before you click the link to open the map, then the map will highlight areas where the selected sample type and tracer can be found.

Fields Tab

You can customise the data that is returned from the search by clicking the "Fields" tab on the Search page and checking the checkboxes beside the fields you require to be returned by the search. Some of the fields are auto-selected but you can de-select these if you wish.

Fields Description

Most of the field names on the Fields tab are self-explanatory. The following table gives a brief overview of each, organised by the grouping they appear in on the Fields tab.

Field name Description
Region Regional ocean/sea name
Sub-region Sub-region ocean/sea name
Station Sampling station name
Latitude Latitude in Degrees/Minutes/Direction
Longitude Longitude in Degrees/Minutes/Direction
Total Depth Total depth at sampling site
Sample Type Either Water, Suspended Matter, Sediment or Biota
Sampling Depth Sampling Depth
Salinity Sample salinity
Temperature Sample Temperature
Dissolved Oxygen Dissolved Oxygen
Sample Filtered Sample filtered or not filtered
Sampling Date (Start/Stop) Sampling date or, if sample collected over a time interval, date sampling begins and ends (mm/dd/yy)
Decay Correction Date Date to which values are decay-corrected
Sediment Type Sediment type
Slice Top Top of core slice relative to surface (cm)
Slice Bottom Bottom of core slice relative to surface (cm)
Biological group Biological group
Species Species name
Body part Body part name
Plankton net size (µm) Plankton net size (micrometers)
Field name Description
Nuclide Nuclide symbol
Value Type This field contains “=” if the value reported in the “Activity” field is above detection limit and “<” if the minimum detectable activity is reported
Activity or MDA Activity or minimum detectable activity
Uncertainty Absolute uncertainty associated to activity
Unit Unit in which activity and uncertainty are expressed
Country Country in which the lab is situated
Data provider Name (full or abbreviation) of the institute/laboratory having produced the data
Source database provider Institute/laboratory providing source database
Database Source database name
Authors name First author’s name
Second Author Second Author
Third Author Third Author
Publication year Publication year
Title of paper Name of the journal
Journal name Name of the journal
Journal volume/number Journal volume or/and number
Book title Book title
First page no. First page of article
Editor(s) Editor(s)

Search Results

If the search criteria entered returns no results, then a message will be displayed to inform you. In this case, broaden your search criteria and try again.
If your search is successful, the search results will be displayed indicating how many records the search returned. Records are displayed 15 per page and you can scroll thru the pages using the "Prev" and "Next" links at the bottom of the page. There is also an indication of how many pages of records have been returned.
You can download the information by clicking on the button.
This will prompt you to either Open or Save the file. follow the instructions on the dialog boxes.

You can return to the search page at anytime by either clicking on the button or the Back button on your browser.


If you have not logged into the MARIS site and you try to access the search page, you will be redirected to the Agency's login page. Enter you username and password in the appropriate fields and click on the Submit button. If your credentials are correct, then the search page will now be displayed.  Agency staff who are already logged into the internal network are automatically logged in to MARIS.

If you are a new user, please see the Registration section below.
If you have forgotten your credentials, click on the "Forgotten Password" link.


The MARis search feature requires users to be registered nucleus users. Users outside the IAEA will be directed to a 'Nucleus Sign In' page, where they enter nucleus username and password, and then return to search page. If the user has no Nucleus username, they must register with Nucleus (at 'Nucleus Sign In' page, see 'Register' feature). The Nucleus registration process includes an email verification action. After the Nucleus account is activated, the user can sign into Nucleus, and then use MARiS search feature.