Gps at australian tide gauge bench marks tgbm
This presentation is the property of its rightful owner.
Sponsored Links
1 / 20

GPS at Australian Tide Gauge Bench Marks (TGBM) PowerPoint PPT Presentation


  • 134 Views
  • Uploaded on
  • Presentation posted in: General

GPS at Australian Tide Gauge Bench Marks (TGBM). John Manning Gary Johnston Paul Digney. Background. A network of Tide Gauges deployed at Australian Antarctic Stations in 1992/1993. Including the establishment of TGBMs in close proximity Continuous GPS Stations - Part of the

Download Presentation

GPS at Australian Tide Gauge Bench Marks (TGBM)

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


Gps at australian tide gauge bench marks tgbm

GPS at Australian Tide Gauge Bench Marks (TGBM)

John Manning

Gary Johnston

Paul Digney

Antarctic Geodetic Symposium 2001, St Petersburg


Gps at australian tide gauge bench marks tgbm

Background

A network of Tide Gauges deployed at Australian

Antarctic Stations in 1992/1993. Including the

establishment of TGBMs in close proximity

Continuous GPS Stations - Part of the

AUSTRALIAN Regional GPS Network (ARGN),

established at each permanent Australian Station in

1993/1994.

Establishment in 1995 of the Southern Ocean Sea

Level Centre to foster international cooperation into

Southern Ocean sea level research

Antarctic Geodetic Symposium 2001, St Petersburg


Activities 2000 2001 summer

Activities 2000/2001 Summer

  • EDM-Heighting technique used to connect GPS

  • to TGBM at both Mawson and Davis Stations

  • 3 days GPS data observed at Davis, Mawson and

  • Larsemann Hills TGBMs

Antarctic Geodetic Symposium 2001, St Petersburg


A comparison of gps heighting and orthometric levelling between the argn mark and the tgbm

A comparison of GPS Heighting and Orthometric levelling between the ARGN mark and the TGBM.

Antarctic Geodetic Symposium 2001, St Petersburg


Gps at australian tide gauge bench marks tgbm

MAWSON TGBM

Antarctic Geodetic Symposium 2001, St Petersburg


Gps at australian tide gauge bench marks tgbm

MAWSON Permanent GPS

Antarctic Geodetic Symposium 2001, St Petersburg


Gps at australian tide gauge bench marks tgbm

http://www.auslig.gov.au/geodesy/antarc/mawsontg.htm

Antarctic Geodetic Symposium 2001, St Petersburg


Gps at australian tide gauge bench marks tgbm

Level Connections at Mawson

Antarctic Geodetic Symposium 2001, St Petersburg


Gps at australian tide gauge bench marks tgbm

Permanent GPS at Davis Station

Antarctic Geodetic Symposium 2001, St Petersburg


Gps at australian tide gauge bench marks tgbm

Antarctic Geodetic Symposium 2001, St Petersburg


Gps at australian tide gauge bench marks tgbm

EDM Height Traversing “Leap Frogging” Technique

Variant of the common technique of spirit levelling,

where the differences in height between change points

are determined using observations of zenith angles and

slope distances.

 Use of Leica TLC2000 Total Station and

single fixed height survey rod and reflector

 Atotal of 12 measurements taken to both

backsight and foresight

 Sight lengths kept below 50 metres

 Misclose to comply with allowable maximum

for SP1 Class LA - 4k

Antarctic Geodetic Symposium 2001, St Petersburg


Gps at australian tide gauge bench marks tgbm

Level Connections at Davis Station

Antarctic Geodetic Symposium 2001, St Petersburg


Gps at australian tide gauge bench marks tgbm

NMVS4

Original TGBM at Davis

Antarctic Geodetic Symposium 2001, St Petersburg


Gps at australian tide gauge bench marks tgbm

http://www.auslig.gov.au/geodesy/antarc/davistg.htm

Antarctic Geodetic Symposium 2001, St Petersburg


Gps at australian tide gauge bench marks tgbm

Attempting to transfer MSL from the Tide Gauge

at Davis to the TGBM

Antarctic Geodetic Symposium 2001, St Petersburg


Gps at australian tide gauge bench marks tgbm

Permanent GPS at Casey Station

Antarctic Geodetic Symposium 2001, St Petersburg


Gps at australian tide gauge bench marks tgbm

http://www.auslig.gov.au/geodesy/antarc/caseytg.htm

Antarctic Geodetic Symposium 2001, St Petersburg


Gps at australian tide gauge bench marks tgbm

TGBM Network Casey Station

Antarctic Geodetic Symposium 2001, St Petersburg


Gps at australian tide gauge bench marks tgbm

Australian TGBM (AUS334) Larsemann Hills

Antarctic Geodetic Symposium 2001, St Petersburg


Gps at australian tide gauge bench marks tgbm

Future Program

  • Continue monitoring the vertical connection

  • between GPS and TGBM, by:

    • levelling, by adopting at least 2nd order standards

    • Repeat GPS observations on TGBMs at each Station

  • Continue the development of fixed levelling routes

  • to maintain consistency

Antarctic Geodetic Symposium 2001, St Petersburg


  • Login