Southeast Coast Network
Wright Brothers NMem
Fort Raleigh NHS
Cape Hatteras NS
Cape Lookout NS
Moores Creek NB
Chattahoochee River NRA
Congaree NP
Kennesaw Mountain NBP
Charles Pinckney NHS
Fort Sumter NM
Horseshoe Bend NMP
Ocmulgee NM
Fort Pulaski NM
Fort Frederica NM
Cumberland Island NS
Timucuan Ecological & Historic Preserve
Fort Caroline NMem
Castillo de San Marcos NM
F t Matanzas
Fort
M t
NM
Canaveral NS
Assessing Inundation Risk From Sea
Level Rise and Storm Surge in Coastal
National Parks Using High Accuracy
Geodetic Control
CACO 14 January 2010
NPS SECN
Monumentation
Tony Curtis, Southeast Coast
Network
Purpose
Establish horizontal and vertical
control for:
• Coastal Shoreline Monitoring
• Salt Marsh Monitoring SET stations
Need for Shoreline Monitoring
• Establish precise and stabile base
station monuments:
CAHA/CALO – 22
CANA/NASA – 6
Little Talbot Is. SP/TIMU – 2
FOSU – 2
CUIS – 4
FOMA – 2
NGS 3D Monument Access Cover
CoSMo –
Coastal Shoreline Monitoring
CoSMo
Need for Salt Marsh SET’s
• Survey Salt Marsh Monitoring SET
stations:
– 5-8 sites of 3 stations each in 8 parks.
Platform Installed at TIMU
USGS FixedDimension GNSS
Antenna Adapter for
SET Observations
Rod Surface
Elevation Table
Reading
Where?
Cape Hatteras National Seashore
Cape
p Lookout National Seashore
Fort Pulaski National Monument
Fort Frederica National Monument
C b l d Island
Cumberland
l d National
i l Seashore
S h
Timucuan Ecological and Historic Preserve
Fort Matanzas National Monument
Canaveral National Seashore
Fort Sumter National Monument
Standards
• Setting a NGS 3-D Monument, Based
on “Revised
Revised NGS 3-Dimensional
3 Dimensional (3
(3-D)
D)
Rod Mark” [Draft Version],
Curtis L.
L Smith,
Smith NGS,
NGS July 1996
• Procedures for Connecting SET Bench
M k tto the
Marks
th NSRS,
NSRS Geoghegan
G h
ett al,
l
NGS, January 2009
How?
• SECN is working with state survey
offices such as NCGS to install NGS
offices,
3D Monuments.
• SECN is installing SET sites in each
park.
• SECN iis ffollowing
ll i the
th NGS protocol
t l
for Connecting Bench Marks to the
NSRS andd is
i conducting
d ti the
th survey.
NGS 3-D Rod Mark
COE Type B Monument – Deep Rod
– Stainless Steel with Sleeve
TIMU OO1B Station
Importance of Stability
STABILITY
Stability codes A, B, and C are defined in the Blue
Book, Volume 1, Annex I, with examples given
below. Only codes A and B are recommended,
however concrete posts may be selected with code C
stability if the mark is deemed stable from review of
soil conditions and average frost depth.
Stability code A = expected to hold an
elevation. Examples: rock outcrops;
rock ledges; bedrock; massive
structures with deep foundations; large
structures with foundations on bedrock;
or sleeved deep settings (10 feet or
more) with galvanized steel pipe,
galvanized steel, stainless steel, or
aluminum rods.
Stability
y code B = pprobablyy hold an
elevation. Examples: unsleeved deep
g massive retainingg walls;
settings;
abutments and piers of large bridges or
p
rods or ppipe
p in a
tunnels; unspecified
sleeve less than 10 feet; or sleeved
pp
steel rods.
copper-clad
Stability code C = may hold an elevation
but subject to ground movement.
Examples: Metal rods with base plates
less than 10 feet deep; concrete posts (3
feet or more deep); large boulders;
retaining walls for culverts or small
bridges; footings or foundation walls of
small to medium-size structures; or
g , pplatforms,,
foundations such as landings,
or steps.
Why, this method?
• Monitoring for sea level rise requires
long term stability and accuracy.
accuracy
• NGS 3D Monuments, when installed
correctly are Stability Code A.
A
• SET Stations are Stability Code B.
• SECN Protocols do not allow Stability
Code C.
What’s Involved
• Selecting a site that is open to the sky.
• Driving 9/16
9/16” stainless steel rod to
refusal.
• Install
I t ll sleeve,
l
as necessary.
• Install enclosure and cap.
• Wait 30 plus days and survey.
• Process data, complete forms and
submit to database.
What is Refusal
NGS defines refusal as:
"Refusal" for a rod monument is defined as
No more than one (1) foot (305mm) of
"No
further penetration of a rod monument in
p
g with a
one ((1)) minute of impacting
gasoline powered reciprocating impact
hammer (minimum of 25 pounds force
per blow)".
bl )
Initial Observation
• In compliance with the NGS protocol,
each site is observed for a minimum of
5.5 hours daily over a three day period,
dependent upon tides
tides.
• This will routinely achieve 1 cm
ellipsoidal height accuracy.
accuracy
Recovery / Periodic Observation
• SET Benchmarks will be observed upon
installation again 12 months later and
installation,
every 3 years.
• Coastal Shoreline Monuments will be
observed a minimum of 5 hours every 6
months.
months
Data Processing and Storage
• GPS observations will be processed
using OPUS
OPUS.
• Positional data will be stored internally
in the Networks SQL Server
geodatabase, and
• NGS Bl
Bluebook
b k and/or
d/ OPUS - DB.
DB
OPUS
OPUS
D t h t
Datasheet
NGS Bluebook
http://www.ngs.noaa.gov/cgibin/datasheet.prl
NGS Data Sheet
SECN Data Storage
TIMU Saltmarsh
Additional Information
• http://www.ngs.noaa.gov/FGCS/BlueBook/
• http://www.ngs.noaa.gov/OPUS/
• http://www.ngs.noaa.gov/PUBS_LIB/Proced
uresForConnectingSETBMsToTheNSRS.pdf
g
p
• Tony Curtis, SECN@CUIS
912 882 9239 or [email protected]
912.882.9239
tony curtis@nps gov
Twitter h // i
http://twitter.com/SECoastNetwkNPS
/SEC
N kNPS
TIMU Platform – Receding Tide