A well trained crew!But this group actually froze on command for me: Not a blur in sight(they broke out laughing a second later).
Unfortunately, the politicians have forced this broad subject to become politicized. For and against, believe or not, one group of elected people run in each direction. They run for, or they run against. And money pours in on both sides. No easy resolution in sight.So sea level.... In the Hudson river, I have seen over the last 50 years a very small impact. The road to my marina flooded about the same at high tide as it did in 1969. The shore line has not changed in a discernible way. A wreck in Thompson Cove extends above the water the same as in 1969.
I've had a home on the west coast of Florida for the last 5 years and I have seen a noticeable rise in water levels on my pier and flooding has been much worst even when there was no significant storm activity. Hasn't reached the house yet but put the dock under water several times in spite of my raising it 2 feet when I re-build it 3 years ago. I can sail closer to dredge spoil areas than the charts say I should, another indication that water levels have risen.
I am an environmental engineer and have more that a passing interest in water bodies and their changes over time. I stay apolitical to cause effect because the time scale of there events are beyond even my years. I do not personally believe we can stop these effects but also believe that solutions to global warming have an more immediate positive effect in having better air to breath, water to drink and land to live on. If that slows warming, an added benefit. Political will..... I'm apolitical so leave that to others.
Back in my whitewater kayaking days I wondered the same thing. Turns out it is pretty simple. Here's a basic diagram:I really can't imagine how water height is measured. Here I can't discern any raise in Sea Level. I can go places I've visited for 50 years and cannot see any difference in height of tides. What ever difference there is, is magnitudes less than that of tide, wind effects, rain fall etc. But then other reports differ. Several have spoken of disappearing islands. I can't comment on that. Different observers see different things. That is the challenge in measuring oceanic rising and for that matter, temperature. And that water doesn't stay in the same place.
Makes sense, the Earth's crust is not stable therefore sea level is not stable.Sea level is measured very precisely by satellites. One recent discovery is that sea level rise is not uniform around the globe.
Climate change is complicated but that isn't an excuse for inaction. For example, the Chesapeake region landscape is sinking as a result of the end of the last ice age, as you note. But that only accommodates a bit more than 50% of our sea level rise. The rest of it is from an expanding volume of warming water that now blankets the eastern seaboard. That, by the way is how H. Sandy found enough thermal energy to strengthen and make it all the way to New Jersey where it came ashore with a force multiplier - high tide. Complicated, but deadly.Sinking land, see studies. They say sinking land is the largest factor in sea level rise along the Chesapeake. It has to do with a "fore bulge" caused by glaciers during the ice age and it is receding. So many complicating issues. I also would never expect sand bars in the bay to have any semblance of permanence. We're less than an insignificant speck in time.
As you say, the satellite altimetry is very accurate. But we've only had it since 1993. NOAA in colaboration with NASA and a few other gov. agency's around the globe keep an up to date site on NOAA for Sea Level Rise in various parts of the world.Sea level is measured very precisely by satellites. One recent discovery is that sea level rise is not uniform around the globe.
We were there last in 2016. Venice is being loved to death by all us that visit. Taking care of millions of visitors when you have no roads or other land means of transportation, is no small feat. Everything is delivered by water. Once the means took on the combustion engine, the extra erosion of constant boat wakes have been the way of life on the main canals.Re: Venice. We heard from locals, off the record, that a big problem with settling/sinking was dredging out for the cruise liners. Basically, when the did that, the earth under the islands started to refill it. We were there in 2008 if I recall correctly.
In my view “all men are created equal” is a statement that no individual, or collection of individuals, has, or have, any innate right or authority to rule or govern over others. There is no Devine right of kings or other monarchs to rule. The only legitimate “rule” or governance to be allowed is one that “we the people” consent to, etc.This is the narrow interpretation of the "all men created equal phrase." In this phrase and throughout the rest of the Declaration Jefferson and the other signers were saying that all men and all nations are equal. This is far more important than the common narrow interpretation. Here were 13 piss poor colonies, with no army, no currency, no navy with very different interests saying in effect "We are equal to England," at the time the strongest country in the world.
We are drifting far afield from sailing. Danielle Allen wrote an excellent book, Our Declaration: A Reading of the Declaration of Independence in Defense fo Equality. If you are interested in understanding the origins of our country and the values we declared 250 years ago, this is a must read. It is easily read and informative.
Please refresh the "track"...OK... we are getting way off track. I know I was partially to blame, but now we are talking the Declaration of Independence. So let's get back on track, please.