Land Subsidence in the United States

February 9, 2009
/ Print / Reprints /
ShareMore
/ Text Size+

Posted By Mike Falk on 2/8/2009 at 1:28 PM

Subsidence is more common than many may realize. USGS Fact Sheet-165-00 cites several examples and causes across America.

Subsidence due to ground water pumping.




Subsidence due to sinkholes and evaporative rock.




Simpler types of vertical movement are evidenced by the age-old axiom to not place bench marks in highway side slopes.

Another thing to consider would be to ask yourself why NGS adopted the NGS 3-D Monument

To read the rest of this thread go to www.i-boards.com/bnp/pob/messages.asp?MsgID=1359886&ThreadID=129287&IsResponse=False#1359886

Did you enjoy this article? Click here to subscribe to POB

Recent Articles by Mike Falk

You must login or register in order to post a comment.

Multimedia

Videos

Image Galleries

HxGN Live

More than 3,500 attendees from more than 70 countries attended HxGN Live, the annual Hexagon AB user conference, at the MGM Grand Hotel & Casino in Las Vegas on June 3-6. About 450 keynotes and panel discussions were held, and several companies from around the world exhibited their geospatial products. Here are a few snapshots from the event.

9/30/14 2:00 pm EDT

Technical Workflows on the Job Site Using 3D Laser Scanning

The purpose of this webinar is to dig into different laser scanning workflows and techniques.

POB

POB September 2014

2014 September

In this September 2014 issue of POB, we take a look at a book that reveals how a rare-map dealer made millions stealing ancient maps. Also, discover the secrets of a 21st-century surveyor and how technology enables small surveying businesses to ease growing pains and maximize their potential.

Table Of Contents Subscribe

Surveying Career

Would you recommend surveying as a career to a current college student?
View Results Poll Archive

Point of Beginning Store

M:\General Shared\__AEC Store Katie Z\AEC Store\Images\POB\epubsite\Statues-pic-large.gif
Surveyor Statues

The perfect gift or award for any special occasion.

More Products

Clear Seas Research

Clear Seas ResearchWith access to over one million professionals and more than 60 industry-specific publications, Clear Seas Research offers relevant insights from those who know your industry best. Let us customize a market research solution that exceeds your marketing goals.

Geo Locator

Buyers Guide

The #1 buyers' guide for land surveyors and geomatics professionals. Search listings for software and equipment manufacturers, equipment dealers and professional services. CLICK HERE to view GeoLocator.

STAY CONNECTED

Facebook logo Twitter logo  LinkedIn logo  YouTube logoRPLS small logo

Google +