1633 Results
1 datasets

Short Description: 13C, stable isotope of C

Official Name: 13C

Units: various

14 datasets

Short Description: 14C

Official Name: carbon-14

1 datasets

Short Description: 15N, stable isotope of N

Official Name: 15N

Units: various

4 datasets

Short Description: stable oxygen isotope 17

Official Name: 17O

7 datasets

Short Description: stable oxygen ration 18

Official Name: 18O

20 datasets

Short Description: absorbance

Official Name: absorbance

Units: unitless

1 datasets

Short Description: absorbance_sd

Official Name: absorbance_sd

Units: unitless

11 datasets

Short Description: absorption coefficient

Official Name: absorption coefficient

Units: 1/m

300 datasets

Short Description: abundance

Official Name: abundance

Units: various

Deprecated

Short Description: abundance_total

Official Name: abundance_total

Units: number/m^3

4 datasets

Short Description: actinium-227

Official Name: actinium-227

Units: various

Deprecated

Short Description: acantharian Carbon biomass

Official Name: acanth_C

Units: nanograms C/liter

8 datasets

Short Description: Acoustic backscatter in the water column

Official Name: Acc_bksctr

Units: various

1 datasets

Short Description: acceleration

Official Name: acceleration

247 datasets

Short Description: accession number

Official Name: accession number

Units: unitless

1 datasets

Short Description: acetic_acid

Official Name: acetic_acid

2 datasets

Short Description: acrylate

Official Name: acrylate

Units: variable

21 datasets

Short Description: action

Official Name: action

Units: dimensionless

59 datasets

Short Description: activity and comments

Official Name: activity_and_comments

Units: dimensionless

Short Description: Ag110_area_8847keV

Official Name: Ag110_area_8847keV

Units: counts

Keyword Searches

Keyword searches are parsed into a series of terms and operators.

Terms can be a single word — plankton or carbon — or a phrase surrounded by double quotes — "ocean acidification"

Operators allow you to customize the text search in the following ways:  

Wildcards

Wildcard searches can be run on individual terms, using:

? to replace a single character:

carbon?te

* to replace zero or more characters:,

ocean acid*

Boolean Operators

The preferred operators are:

+ (this term must be present)

- (this term must not be present)

"coral calcification" +biota -pacific

- biota must be present

- pacific must not be present

- "coral calcification" is optional - its presense increases the relevance

Fuzzy Matching

We can search for terms that are similar to, but not exactly like our search terms, using the "fuzzy" operator: ~. This uses the Damerau-Levenshtein distance to find all terms with a maximum of two changes, where a change is the insertion, deletion or substitution of a single character, or transposition of two adjacent characters. The default edit distance is 2, but you can specify the distance:

"carbon"~3

Proximity Searches

While a phrase query (eg "john smith") expects all of the terms in exactly the same order, a proximity query allows the specified words to be further apart or in a different order. In the same way that fuzzy queries can specify a maximum edit distance for characters in a word, a proximity search allows us to specify a maximum edit distance of words in a phrase:

"primary production"~3