Properties of Seawater
Halocline Exploration Your Objective
Use salinity data across a summer in the North Atlantic Ocean to look if there are patterns in the depth and shape of the halocline over time.
Make a prediction about how the location of the halocline may change over a summer in one location.
Explore the data below to see what you can observe.
When the site loads, you are able to a salinity profile from June 1, 2015 from the Coastal Pioneer Array. You can interact with the data by:
Selecting a different date to explore the data in ways that interest you by using the left/right arrows or moving the time slider box to the left or right.
Seeing how the date your are looking at compares with all of the other data from the summer by selecting the "Show Context" button.
As a note, each day graphs as a different color.
Questions for Thought
How can you know what date the data are from that you are looking at in the graph?
Across what time periods in summer 2015 are you able to observe salinity with depth data in this interactive?
What is the first day and month there are data?
What is the last day and month there are data?
What changes or patterns did you observe in the location of the halocline over this time period in the Northern Atlantic Ocean?
When did you see these changes or patterns?
What questions do you still have about changes in the depth of the halocline over time?
Click on the images below to learn more about where and how the dataset above was collected.
The data for this activity was obtained from the following profiling CTD instrument:
Download this Dataset
The above datasets were downloaded from the OOI data portal. Complete profiles of the instrument were identified and the profile closest to midnight (GMT) each day was saved. This reduced the overall temporal resolution (and size) of the final dataset but it preserved the raw variability exhibited in individual profiles and measurements.
Finished the activity? Please take our quick
This site was developed with the support of the National Science Foundation under Grants OCE-1550207 and OCE-1649637. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the authors and do not necessarily reflect the views of the National Science Foundation.
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