Summary of Services provided by

PT. Tunggal Buana Utama

GEOPHYSICAL STUDIES

• Magnetotelluric [MT]  soundings
5-component lay-out ; Phoenix V8 recorders

• Time-domain electromagnetic soundings [TDEM]
In-loop & out-of-loop; Sirotem  &  Zonge recorders

• Proton  total-field  Magnetometry
Base and field measurements ; Geometrics G-856, G-858s

• Regional & semi-regional  Gravity
Widely spaced  station sampling; L&R  ‘G’ gravitymeters

• Repeat  Micro-Gravity monitoring
Time-lapsed measurements on permanent benchmarks; L&R ‘D’ meter

• Repeat  Micro-earthquake [MEQ] monitoring
Time-lapsed measurements over producing fields; Geotech Smart24R recorders

• Passive seismic  [MEQ]  recording, processing & interpretation
Measurements at permanent down-hole locations;Geotech Smart24R,Geosig sensors

GPS and OMNISTAR POSITIONING

• DGPS
Geodetic multi-station networks; Trimble 4000-series receivers

• RTK
Sub-centimetre real time ‘on-the-fly’ positioning; Trimble 4700-series receivers

• OmniStar  ( High precision Signal )
Stand-alone x.y.z positioning to +/- 20 cm accuracy; Globalpos Orion system

GEODETIC and PLANE SURVEYING

• Precise heighting  by  Digital  levels &  Invar staves (1st order)
Geodetic 1st order leveling ; Leica 2000/3000 digital levels + 3metre Invar staves

• Precise positioning ( x,y,z)  by  DGPS  geodetic receivers (1st order)
Geodetic multi-station networks; Trimble 4000-series receivers + least-squares adjustment

• Digital  barometry for  low-order  reconnaissance
Reconnaissance topo mapping ; Digibar barometers

• Seismic profile traversing  by  EDM  (3rd order)
Included-angle traversing from GPS control; Pentax PS-515 & Topcon 3000LN EDMs

• Topographic mapping  by  DGPS, OmniStar, EDM traverse (3rd order)
Large-scale topographic mapping & contouring; methodology according to GPS reception

• Topographic detail mapping  +  road design + volumetric calculation
Small-scale mapping for engineering works; Leica 2000  levels, Pentax/Topcon EDMs

• Tide measurements using acoustic gauges
Tide measurements for establishment of benchmarks; CEETIDE acoustic guages

• Cadastral  mapping  using GPS technology & low-order traverse
Stop-and-Go’ or Pseudo GPS kinematic positioning, EDM traverse; Trimble 4000-series

• Geological  profiling and mapping – low-order
Geological profile sampling by hand-held GPS and/or compass traverse + barometry