This page describes and gives options for manipulating the GEOSECS dataset. We start with the options for manipulating, because once you are comfortable with the system, they are the most useful.

Dataset Options

GEOSECS options	Help	Expert Mode
	Data Selection	Data Files	Tables

Help/Terse: switches back and forth between this relatively descriptive page that contains extended explanations, and the page that just has the information.
Expert Mode: switches into a mode that lets you access several datasets at the same time, and enter data-manipulating commands directly as text rather than clicking on a series of pages.
When in Expert Mode there is a list of active datasets at the top of the page, followed by a text window containing the command equivalent of the current page. These commands can be edited or extended.
Views: (the icons that show different views) go to an interactive data viewer that let you view the data with a variety of plot types (including colors and contours), zoom in and out, and select different slices and different variables. You can also save the view in a variety of formats, including as a clickable link in your own html document, as well as extract the data in the view as a table or datafile.
Data Selection: lets you pick out a subset of the full dataset. You should try the interactive data viewer first.
Data Files: lets you download the dataset in your choice of format.
Tables: lets you view the data as a table. A number of formatting options are available.

Note that there will be many more options once you have picked a particular variable, because the server is currently more adept at manipulating single variables than it is at manipulating datasets (e.g. collections of variables).

Dataset Description

We start with a quick reminder of where you are in the collection of datasets.

SOURCES GEOSECS^* [map]

As you go from left to right, the datasets listed get more and more specific, ending with the current dataset, GEOSECS. Datasets with documentation are marked (*): the * links to the documentation directly.

GEOSECS

Locations
	Searches

Domain is by centered at [0, 0].

Click on map to select data; change the Zoom menu to zoom in as well.

GEOSECS: Geochemical Ocean Sections Study, a global survey of the three-dimensional distribution of chemical, isotopic, and radiochemical tracers in the ocean. The expeditions were in the Atlantic from July 1972 to May 1973; the Pacific from August 1973 to June 1974, and the Indian Ocean from December 1977 to March 1978.

Documents

give additional information about the current dataset.

outline: shows all the different parts of this dataset (the parts are datasets and variables, see below).
dataset documentation

Datasets and variables

Variables (also called data or dependent variables) are sets of numbers, along with the grids (independent variables) that place those numbers in space and time, and the additional information (such as units) that render the data meaningful. Datasets are collections of variables and datasets. This will become clearer once you look at the outline.

Grids

Grids are the independent variables contained in this dataset.

ISTA	grid: /ISTA (ids) unordered [ (1) (2) (3) ... (452)] N= 310 pts :grid
IZ	grid: /IZ (unitless) ordered (1.0) to (120.0) by 1.0 N= 120 pts :grid

Other Info

iridl:hasSemantics: iridl:SIO

apparent oxygen utilization	GEOSECS AOU[ IZ \| ISTA]
bottle number	GEOSECS BOTTLE[ IZ \| ISTA]
∆¹³C	GEOSECS Delta_C-13[ IZ \| ISTA]
∆¹⁴C	GEOSECS Delta_C-14[ IZ \| ISTA]
depth	GEOSECS DEPTH[ IZ \| ISTA]
latitude	GEOSECS lat[ ISTA \|]
longitude	GEOSECS lon[ ISTA \|]
nitrite	GEOSECS NO2[ IZ \| ISTA]
nitrate	GEOSECS NO3[ IZ \| ISTA]
oxygen	GEOSECS OXY[ IZ \| ISTA]
PCO2	GEOSECS PCO2[ IZ \| ISTA]
PCO2_TEMP	GEOSECS PCO2_TEMP[ IZ \| ISTA]
phosphate	GEOSECS PO4[ IZ \| ISTA]
pressure	GEOSECS PRESS[ IZ \| ISTA]
salinity	GEOSECS SAL[ IZ \| ISTA]
σ₀	GEOSECS SIGMA0[ IZ \| ISTA]
σ₂	GEOSECS SIGMA2[ IZ \| ISTA]
σ₄	GEOSECS SIGMA4[ IZ \| ISTA]
SiO₃	GEOSECS SIO3[ IZ \| ISTA]
station	GEOSECS STA[ IZ \| ISTA]
total alkalinity	GEOSECS TALK[ IZ \| ISTA]
total CO₂	GEOSECS TCO2[ IZ \| ISTA]
temperature	GEOSECS TEMP[ IZ \| ISTA]
potential temperature	GEOSECS THETA[ IZ \| ISTA]
tritium TU	GEOSECS Tritium_TU[ IZ \| ISTA]