New Zealand is sometimes called "The Shaky Isles"
We have some survey monuments on our Alpine fault moving at around 40mm per year
And this last weekend we had a big (7.1) quake
There have been some significant ground shifts...
Note the tyre tracks - and that shelter belt was originally a striaght line
Just how well would your cadastral system cope?
Sometimes you just have to play it where it lies or in this case, where it is today.
Presumably in your area you have laws dealing with how to handle earthquake caused movement as they do in California?
Thats quite a shift there.
Throw all of the error into the abyss?
:-O
:coffee: :coffee:
Hell, that sounds great. You can't be wrong. Just set a rod where you feel is good and if a question comes up, blame it on the quake. 🙂
maybe NZ needs some HTDP software...
I haven't seen an answer yet. Not sure even a local grid would gracefully deal with that kind of shift. Any measuring tool could measure the shift, but not sure how to handle the random coordinate shifts in the record.
jud
how are you going to survey that? Deal with it
We had same issues with our 2002 7.9 magnitude. Had some 10 meter shifts, and it was in a "populated" (for Alaska standards) area.
2002 Alaska Denali Fault Quake
> Not sure even a local grid would gracefully deal with that kind of shift. Any measuring tool could measure the shift, but not sure how to handle the random coordinate shifts in the record.
I think they are still working it out
But in NZ, the boundaries are defined by momunents, not by coordinates.
The cadastral syetm is built around their relative, not absolute, positions - ie think vectors between. So I dont think its actually going to be too big an issue