Learning>Depth
🌊This post is part of this year’s ongoing depth study
🧩This post explores the definition of depth as the middle of a time
This year’s depth study is coming to a close, but there are still some definitions I want to look at. One that I find fascinating is “the middle of a time.” For some reason the examples I’ve found use the plural of depth such as: the depths of winter, the depths of the depression, etc. And though we are past the middle of the year, when it comes to this study, I would say we are in the depths of depth.
While contemplating depth and its relationship to time I came across several interesting concepts: Deep Time, Time-depth, and Time Depth. Let’s take a look at each.
Table of Contents
Deep Time • Time-depth • Time Depth
Deep Time
Deep Time is the vastness of geological time. It spans billions of years which is hard for humans to grasp due to our short existence in comparison. PBS has a video called Time: It’s Like, So Deep that talks about how to teach deep time to young students. I also found this interesting article: The benefits of deep time thinking by Richard Fisher for the BBC which includes three short films by Adam Proctor.
Time-depth
In geophysics, a time-depth conversion takes sound-wave velocity (time) data and converts it to depth. Sound waves move through different substances at different speeds. The conversion uses velocity models to account for variations in the speed of the waves.
Understanding Time-Depth Conversion (from Seisware)
In oceanography, time-depth plots show salinity, density, temperature, and currents at a certain depth over time.
Time-Depth Gridding (from NOAA)
Time Depth
In Merriam Webster, Time Depth is defined as: a period of time during which a culture, language, or group of languages has been undergoing independent genetic development.
Historical linguistics uses comparative methods of sound, shared core vocabulary, and typological features to trace languages through time.
The shape and tempo of language evolution (from National Library of Medicine)
Conclusion
Lots of interesting aspects of depth to explore. I hope you enjoy the links and learn some fun stuff.
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