Penyeliaan Tesis (2003-2004)

Pada sesi 2003/04 seramai tiga pelajar berjaya menyiapkan tesis BSurv di bawah seliaan saya iaitu;

Ernyza binti Endot "Pembangunan perisian analisa deformasi Kaedah Fredericton".
Mohd Azwan bin Abbas "Pemakaian dan pemprosesan data geoteknik dalam kerja ukur deformasi".
Lee Cheh Hang "Penggunaan APSWin dalam ukur deformasi".

Ernyza memfokus kerjanya untuk memperbaiki rutin yang dibangun oleh Ng Ah Lee sebelum ini dengan mengubahnya kepada operasi window. Azwan pula cuba membangunkan rutin untuk memproses data yang diperolehi dari peralatan geoteknik.

Ketiga-tiga mereka kemudiannya menyambung pengajian ke peringkat MSc di FGHT. Mohd Azwan mendapat penajaan dari Uitm sebagai staf akademik muda manakala Ernyza dan Cheh Hang dibiaya melalui vot penyelidikan Cimes.

Tasek Dal

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IUGG/IAG General Assembly Sapporo (2003)

The XXIII IUGG General Assembly together with IAG was held in Sapporo Japan from June 30 to July 11, 2003. During the IAG President (Fernando Sanso) opening speech he mentioned names of geodesist passed away between the last meeting (in Birmigham 1999) up to Sapporo 2003;

1. Peter Vincent Angus-Leppan (Former President of IAG)
2. S Bakkelid (Norway)
3. Tetar Kresimir Colic (Croatia)
4. Joseph F. Dracup (U.S.A.)
5. R C. A. Edge (U.K.)
6. Lars A. Haller (Sweden)
7. Francis J Lerch (U.S.A.)
8. J.J. Levallois (Former IAG General Secretary)
9. Alwyn R. Robbins (U.K.)
10. Thaddeus Vincenty (U.S.A)
11. Hans-George Wenzel (Germany)
12. O’Keefe (USA)
13. Rowland Oluwole Coker (Nigeria)

Sapporo Convention Center
(One of the premises for IAG 2003 General Meeting 2003)

Sapporo 2003 Comptes Rendu can be read here - iugg.

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Amos & WEF 2003 Preparation of a New Data File for Geoid Computation

Source: Amos & WEF (2003) “Preparation of a new ….” NZ Surveyor

1. The paper described that free-air gravity anomalies were computed;

• from IGSN71-corrected gravity observations
• by subtracting the value of normal gravity at the geocentric observation latitude,
• then adding the second-order free air correction and atmospheric correction for the for the observation elevation (above local MSL)

2. A second-order free air correction is a more accurate representation of the vertical gradient of gravity for an ellipsoidal Earth because it takes into account the variation of normal gravity with latitude as well as higher order terms in height.

 

3. Why do atmospheric correction?

i) AC accounts for the mass-inconsistency between the GRS80 normal ellipsoid and gravity observed        on the Earth surface, as well as

ii) the gravitational attraction of the atmosphere above the gravity observation point,

iii)  AC also needed to make the terrestrial gravity anomalies consistent with those derived from the GGM

 

4. How to apply AC? Relevant formulas are given in

i) WEF (1995)

ii) WEF et al (1997)

iii)  Further work on AC is described by Sjoberg (2000)

 

Torge, 1989 – Gravimetry, Gruyter …. mentioned that the Potsdam gravity datum contains an error (… therefore IGSN71 global gravity datum should be used instead)

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IAG 128 - A Window on the Future of Geodesy

IAG 128 - A Window on the Future of Geodesy is the proceedings of the IAG General Assembly held in Sapporo in 2003. The volume editor and series editor is Fernando Sanso (IAG President).

IAG 128 - Sapporo General Assembly (Published in 2005)

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IAG 127: V Hotine-Marussi (2003)

IAG 127 is the proceedings of the V Hotine-Marussi Symposium on Mathematical Geodesy. The symposium was held in Matera, Italy in June 2003 hosted by Italian Space Agency. The place is the
largest Italian facility for space geodetic observations including the quite impressive device for satellite and lunar laser ranging and the giant VLBI antenna.

IAG 127 (Published in 2004)

Among the interesting papers ;

"Gaussian differential geometry and differential geodesy" by Joseph D Zund of New Mexico Uni. This paper presents an appreciation of the work of Marussi and Hotine, and gives a survey of Gaussian differential geometry which are required in formulating the generalized Marussi-Hotine approach to differential geodesy.

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IAG 126 - SAGGO (Wuhan 2002)

IAG 126 'Satellite Altimetry for Geodesy, Geophysics and Ocenography" is the proceedings of The "International Workshop on Satellite Altimetry for Geodesy, Geophysics and Oceanography: Summer Lecture Series and Scientific Applications". The Workshop was held in Wuhan China in September 2002. The proceedings was edited by Cheinway Hwang (NCTU Taiwan), CK Shum (OSU) and Jiangcheng Li (Wuhan Univ). Series editor was Fernando Sanso.

IAG 126 (Published in 2004)

Cheinway Hwang
(b.1961; PhD OSU 1991)

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IAG 125 - Vistas for Geodesy

IAG 125 "Vistas for Geodesy in the New Millennium" is the proceedings of the IAG Scientific Assembly held in Budapest in September 2001. The proceedings was edited by Profs Jozsef Adam and KP Schwarz with Fernando Sanso as series editor.

IAG 125 (Published in 2002)

Dr Joszef Adam (researchgate)
Dipl-Ing Budapest 1974; PhD Budapest 1977; DSc HAS 1991

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Vistas for Geodesy - IAG Budapest

IAG 125 Vistas for Geodesy in the New Millennium is the theme of the IAG Scientific Assembly held in Budapest in September 2001. The assembly was hosted by the Hungarian Academy of Sciences in Budapest. The meeting attracted a large crowd of over 440 participants from 54 countries.

TU Budapest (photo taken Jan 2005)

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IAG 124 - Vertical Reference Systems (2002)

IAG 124 "Vertical Reference Systems" is the proceedings of the IAG Symposium on Vertical References Systems held in Cartagena, Colombia in February 2001. Reasons for organizing this symposium were the great success and the ongoing activities of the Project on the South American Geocentric Reference System (Sistema de Referencia Geocentrico para America del Sur, SIRGAS) being sponsored by lAG and PAIGH since 1993.

The proceedings was edited by Hermann Drewes (DGF), Alan Dodson (Nott U), Luis Paulo Souto Fortes (IBGE Brazil), Laura Sanchez (ICAG Colombia) and Pedro Sandoval (IGAC Colombia). The Series editor was Fernando Sanso. It was attended by 130 participants from 30 countries.

Hermann Drewes - Director DGFI Munich (researchgate)

b.1944; Dip-Ing Hannover 1970; PhD Hannover 1975

Professor Universidad del Zulia Maracaibo Venezuela 1977-79

IAG 124 (Published in 2002)

Among the papers presented;

"Current status of vertical control network in Peninsular Malaysia and plans for adjustment" by M. Azhari, S. Shahrum, and K. Majid
'The vertical datum and local geoid models in Uruguay" by W H. Subiza Pifia, H. Rovera Di Liandro, and L. Turban
"New results in the determination of the geoid model in Argentina" by M. C. Pacino, G. Font, C. Tocho, and D. Blitzkow

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IAG 123 - Gravity, Geoid & Geodynamics (2002)

IAG 123 - is the proceedings of The IAG International Symposium on Gravity, Geoid and Geodynamics (GGG2000) which was held in Banff, Alberta, Canada, from July 31 to August 4, 2000. This symposium continued the tradition of mid-term meetings ("GraGeoMar96: Gravity, Geoid and Marine Geodesy", Tokyo, Japan, Sept 30 - Oct 5, 1996).  Banff meeting was organized by Prof Sideris and his team from U of Calgary. It attracted 200 participants from 32 countries around the world.

IAG 123 (Published in 2002)

Two keynotes addresses were presented;

1. Time Variable Gravity: An Emerging Frontier in Interdisciplinary Geodesy (J Dickey - JPL)
2.  Earth Physics and Global Glacial Isostasy: from Paleo-Geodesy to SpaceGeodesy
   (R. Peltier - Dept of Physics, U of Toronto)

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Mechanical Eng / Ind Svy PhD Thesis (2002)

A PhD thesis "Quantifying coordinate uncertainty fields in coupled spatial measurement systems" submitted to Virginia  Polytechnic Institute and State University. The thesis was for a PhD in Mechanical Engineering in 2002.

The thesis (Virginia Polytechnic Institute & State U)

asus desktop sep 2016

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Laser scanning system in monitoring surveys (Lichti et al 2002)

Among the early paper on TLS surveying was “Ground-based laser scanners: Operation, systems and applications” written by Lichti, Gordon & Stewart of Curtin University. The paper was published in Geomatica 56(1) in 2002. Four scanner systems were discussed;

a)      RIEGL LMS-Z210 (used by I-Site Laser Imanging, Australia)

b)      Cyrax 2500 from Cyra Technologies USA

c)      Callidus 3D Laser System (from German)

d)      Optech ILRIS-3D Lidar Imaging Syatem (Canada)

Case studies undertaken were structural monitoring of North Dandalup Dam, WA; Toodyay bridge WA; simulated deformation testing at Curtin University Calibration Field. These works are used to illustrate the practical use laser scanning for monitoring purposes.

   

Cyrax 2500

Riegl LMS-Z210
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