Juxtaposed photographs, another approach to visualization of high and low tides.

An alternative approach to visualization of tides has been provided by Ron Hipschman, of San Francisco's Exploratorium.  A friend had asked, wasn't there a more direct way to portray the high and low tides, than a graph, or just numbers?  

These two panoramas were compiled from series of photographstaken at high and low tide.  The subject is Pier 15 (site of the Exploratorium), on the left, and Pier 17 on the right, at San Francisco.   I don't know the dates and times.  These were obviously taken from out in the Bay, probably from a boat.  How else?

Satellite Altimetry: Tide Gauge Network on Steroids // Sea Level Rise

 This article caught my eye.  

 

 https://earthobservatory.nasa.gov/images/147435/taking-a-measure-of-sea-level-rise-ocean-altimetry

 

Here's a link to the whole Earth Observatory Sea Level Rise collection 

 

I am remembering that in 1996, when I started teaching Environmental Science on the island of Saipan, it was difficult to find news articles online to print for student use.  There were very few.  Even before this, I had taught Environmental Science for a number of years in Chuuk Lagoon, predating, I think, the Internet.  Needless to say, there was Zero presence of news articles about Sea Level Rise.

Sadly, there are places on the globe, even today, where sea level rise is an actual fact of every day life, but where no Internet resources are available to educate or prepare the islanders or their decision making leaders.  

It is a profoundly obscene actuality: publishers of scientific journals want to charge even those islanders---assuming any ability to access them through the Internet---up to or more than 52.00 for a single article.  These islanders do not use or carry money.  

Such arrogance.  How arrogant we are.