'NITJ.UJ NATIONS
AINlj SUCIAL CUUINCH
TCI!
for ^frfa?i
s Ababa, RthJopln, 10-l7 Mori^ber
UEHP.HA I,
20 October 1906
Or-tGfMnT r
Cq-IMI53IOII FOR GEODgSr IN
TitftlHIKG WORKSHOP IH GHA FOR AFitlCATTYamoussoukro. Cote d'lvoire
WORKSHOP in QHAVMHrnr
RICAW flmflnTM,TqpYamoussoukro. Cote
A 4-week training course in gravtaetry is scheduled to take place in 'Yamoussoukro, Cote d-Ivoire, fro, 2nd to 28th March, 1987 as jart of
the African Gravity Standardization Net (aGSN) project with the
objectives stated below.
OBJECTIVES
1. To provide a homogeneous datum and calibration standard for the
unification of gravity surveys in Africa.
2. To promote the use of gravinetry as an effective tool in the search
for economic ninerals in Africa by traini^ ^^ geoac
with the necessary basic knowledge in the observation and
processing of gravity data.
To .a^ise the long tera benefits of the project to African nations, the omission for Geodesy in Africa win hold the above workshop to train a pool of African geoseientists who can perform not only the data acqui.itK»
process^ and analysis tasks hut also the many local follow-up projects net and to perform on-going network maintenance,
PARTICIPANTS
Interested young African geoscientists with the following .intauo
requirements are invited to attend the workshop.
(a) Quallfinat-lnnfl-
A BSc degree (or equivalent) in the field of Physics or Mathematics
or Surveying or Geodesy or Geophysics.
(b) Experience;
One year post qualification experience preferably in gravity work in Government or private establishments. Preference will be given to applicants nominated bv their establishments who ^ mdertake
cover the cost of the airfares of the applicants Wfro* ^oussoukro.
f : M Zt" thS aPPUCantS f°r the
distribution within the available funds.
Prospective candidates should send their appMcation* toother witn thei,
rr1™ rtae and a ietter f~ ^ «^^ ^ ^ than 1st, 1986 to the address below.
. AJ/JCUYE,
A, GRAV'OTY NETV/ORK COMMITTEE COMMISSION FOR GEODESY IN AFRICA 0/0 FACULTY OF NATURAL SCIENCES
UNIVERSITY OF JOS,
JOS - NIGERIA.
sf ■■
AFRICAN GRAVITY STANDARDIZATION NS.'CT (AGSN):
PROGRAMME FOR THfl TRAINING WORKSHOP
Duration: 4 Weeks
1• Gravity as a Fundamental Tool for^Economic and Scientific Research Reports on status of gravity mapping in participating
countries.
Problems and plans for unifying existing gravity data on
AGSN datum.
Economic and Scientific applications of gravity data
.mineral prospecting
icrustal deformations - earthquakes, volcanic eruptions,- subsidence and flooding, faults.
.Scientific work - earth gravity field model:
its determination and applications in science (e.^: notrclj-;y),
military, navigation and space research, oceanic geoid and structures of the sea floor.
- The elements of a national gravity mapping programme.
- Role of Absolute gravity data and concept of the African
Gravity Standardisation Net.
Review of Theory and Principles of Gravimetry
.summary of fundamental principles
.gravity data observations and reductions and
processing including spectral analysis of potential field data
.relative gravity data instrumentation
.absolute gravity data, principles and instrumentation n .Gravity network adjustment procedures
- semi rz.~crrv3 adjustments - least squares adjustments
error diagnosis and analysis .computational and Field Exercises.
2. gravity Standards
- Design of national gravity networks from the base net down to field observations.
- Selecting and describing sites Observing procedures
Planning and costing field work
- Computer modelling as a means of reducing data Encoding data
- Diagnosis of errors
Gravimeter maintenance and calibration.
5., Mapping the Gravity Field
- Survey design
- Vertical and horizontal control: techniques and Accuracy requirements
Elements of barometric surveying - Field mapping of a test area
Diagnosis of errors
Data reduction and editing in the field
(a) for the test network
(b) for the anomaly mapping test area
4. Data Processing
- Final data reduction and processing; calibration^
instrumental errors, environmental effects - Least squares adjustment of the test network
