How to Use SedDB v1.1
The SedDB search page presents the user with two panels. In the left panel, queries are based on geospatial/geographical/name criteria. Multiple criteria can be combined to narrow a query. The right panel provides global searches by core name, lithology, age, data availability, material, reference, and analytical parameter.
- Enter latitude and/or longitude of the geographical area you are interested in. Enter the Northern and Southern bounding latitudes (latitudes on the southern hemisphere need to be entered as negative values, e.g. 9.6°S = -9.6) and the Western and Eastern longitudes (Western longitudes need to be entered as negative values, e.g. 112°W = -112). You can also select cores/samples collected at a minimum or maximum depth or a specific depth range. All depth below sea level must be entered as negative values. Note that many publications lack depth information.
- Use the interactive map. Open the map icon, position the cursor to define northwest corner of the bounding box and click once, then click on the marker and drag towards the southeast until the desired box had been created. Release the marker. Lat/Long boxes will automatically populated with the defined area. Click "Select Lat/Long".
Three radio-buttons can be used to choose one of the MARGINS Focus Sites. These sites have preferentially been populated with data based on their general interest to the communities of low-temperature geochemistry, paleoceanography, and arc magmatism. Default is set to "none".
Use this criterion if you are interested in cores/samples from one or more specific tectonic settings such as 'Ocean Basin', 'Convergent Margin', or 'Passive Margin'. NB that publications often lack this information, if so tectonic setting is assigned by SedDB staff based on information from complimentary sources.
Use geographical names to define a specific geographical area for your sample selection. Geographical names are used on various regional scales ranging from the name of an ocean to the name of a seamount or a fan. A pull-down list shows all the names currently in the database. In the current version of SedDB only one name can be chosen from the list at a time. The text box can be used to manually enter a search term. Typing "trench" will yield many sites all of which contain the word "trench. However, if you only want data from a specific trench, choose the name from the pull-down list or type the full name into the text box.
This option allows you to access data for samples collected on a specific cruise/expedition. Use the pull-down menu to view and select a cruise/expedition names. Most expeditions are listed as: Common Name>Ship>SedDB Alphanumeric Name.
SEARCHING BY OTHER SEARCH OPTIONS
Since they are so numerous DSDP/ODP cores have their own search pathway. Choose this search if you are interested in data from specific ODP/DSDP legs. A succession of three windows will open allowing you to view/select legs/holes/cores. NB: some publications lack the complete string of hierarchical names, thus not all data from DSDP/ODP will be returned using this search. Instead they can be found using the "EXPEDITION" query.
SELECT BY CORE TYPE
This query can be used as a global search of the database for every sample that is associated with a core (note that not all samples are). The list of core names is by the alphanumeric name assigned by SedDB, not by the name in the publication, as many such names in are non-unique.
The core selection list also has a link via IGSN number to the SESAR system and latitude/longitude and elevation information.
Age model data can also be found under this rubric by choosing 'Filter by Sampling Device and/or Age Model'. At the bottom of the sampling device list there is a checkbox for age models. After filtering, any core with an age model will be listed. Click on the core name and the Core Profile Page will open with the option to look at age model data in table format. Note that most age models lack tie-point table and are simply the numerical age after application of an age model. Age models ages (if available) are included in data down loads.
SELECT BY SAMPLE LITHOLOGY, AGE OR DATA AVAILABILITY
Under this section you can find all samples in the database. Searches can be refined by sediment type (lithology), and/or age, and/or type of data (majors, traces, isotopes etc.). Again, users should be aware that some publications lack lithologic descriptions and many lack age determinations. Age models can be searched for by selecting the time period of interest and clicking the box for 'Assigned Sample Age' under 'Age Methods'. Age model data will be included in the download. Most age model data is in the form of numeric ages without specific tie-points (also see SELECT BY CORE TYPE above for instructions).
SELECT SAMPLE TYPES
Use this search you are interested in a specific material. Choices range from pore water, bulk sediment, grain size fractions and minerals to biogenic materials such as foraminifera and diatoms.
This option allows you to see a complete list of references currently in SedDB and to select specific publications. The list is displayed alphabetically by first author. References can also be queried for: specific authors, titles, years or by data loading interval. Data loading interval is particularly useful to check for new data since your last visit to SedDB.
Click directly on a reference title to open a new window and to view the data tables and table titles from this reference. From here you can view any one of these tables.
If you want to download the data (alone or together with data from any other references) click the check box(es) to the left of the reference and then 'Submit'. You can then choose chemical parameters and methods followed by download/viewing options.
*Note: The data tables contain only original values, any referenced values can only be found in the original publication. If an original table contained data not relevant to SedDB (e.g. hard rock data) such data will also not be included. You may be able to find such data in our sister database PetDB.
SELECT ANALYTICAL PARAMETERS
If you would like all data for a particular chemical item(s) use this search. Parameters are grouped by: Majors, Traces, Stable and Radiogenic Isotopes, Sedimentary and Porewater Components. Any combination of parameters can be selected. Check off the box to the left of the item, then 'Submit'. The next screen will show methods used for these analyses, followed by a data summary and download options.