At least one search option (e.g. Spatial,
Keyword, or Temporal) is needed to create
search results. A combination of two or more
search options (e.g. Spatial Search and Temporal
Search) will return more precise results.
Spatial Search
The spatial search can be used to find related
data set descriptions within a specific geographic
location.
Using the
map
To move the map
A) To zoom in and out, use the + and - button to view the geographic
area of interest.
Coordinates
B)The coordinates for each map
view are displayed beside the map. The
longitude and latitude coordinates are
automatically populated based on changes
to the spatial map. Please
note: You can not directly place coordinates
in any of the boxes.
To retrieve search results:
Click on the search button. To clear search: Click
on the reset button.
Keyword Search
The keyword search can be used to find data
set descriptions related to a specific full
text term. Use the A)
full text box to enter your search term. To
narrow the search results, use the
B)drop down menu options
to search only specific fields within the
data set description (e.g. Title, Summary,
etc). The search term entered will return
results within the "Full Text" of
the descriptions (by default).
The free-text search engine allows users
to search the GCMD database with search functions
that closely resemble the behavior of commercial
Internet search engines. The free text search
engine supports several term modifiers for
enhanced searching options. These include:
Wildcard searches, Fuzzy searches, Proximity
searches, Range searches, andTerm boosting.
The search engines also allows you to restrict
your search to specific DIF fields, through
a fielded search. Example
will return all descriptions with the phrase
"carbon dioxide" as a Variable keyword.
For additional detailed instructions on how
to use the free text search box, see the "Basics
of Full -text searching online guide".
C)
Boolean Search
You can also improve your searches by
adding "operators" (e.g. and,
or) to your search terms in the search
box, or selecting the Boolean search options.
The Boolean search option buttons provide
a way to combine two free text search
terms at once.
“And” gives you the ability
to search for two search terms at once.
“Or” gives you the ability
to search for either one of the two search
terms in your keyword search.
Directions:
Type in your full text search term within
the search box. Please
note if only one search term is entered,
it must be entered within the top search.
To retrieve search results, click on
the search button.
To start a new search, click on the
reset button.
Temporal Search
The temporal search can be used to find data
set descriptions related to a specific date/time
period.
Directions:
A)To include the temporal search click
yes in the option field.
B)
Search, either between dates (default),
before a date, or after a date.
C)
Enter date information in the fields thereafter.
Please note: When entering information
“between dates”, the order is
important. Example: the earliest month
and year (e.g. Jan. 1 1950) must be entered
first followed by the latest month and year
(e.g. Jan 1 2006).
To retrieve search results, click on the
search button