NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Sea level rise
From: Fred Hebard
Date: 2006 Jul 8, 11:21 -0500
From: Fred Hebard
Date: 2006 Jul 8, 11:21 -0500
On Jul 8, 2006, at 11:31 AM, Herbert Prinz wrote: > > George Huxtable wrote: > >> Here, I think that Frank was being somewhat over-simplistic in >> relating change in overall sea level to one location, even as an >> example. >> >> Such local changes respond not only to change in sea level, but also >> to changes in land level, which can be rising or falling. >> >> > > That's where measurements from satellites come in. (e.g. google > TOPEX/POSEIDON.) They directly indicate actual sea levels, but we have > them only for the last decade, or so. Long term tide gauge data and > short term altimetric satellite data can be used to calibrate each > other > and they seem to confirm each other. Aren't there also precision astrometric data from observatories going back to the 1800s? --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to NavList@fer3.com To , send email to NavList-@fer3.com -~----------~----~----~----~------~----~------~--~---
