Another new book “The Hunt for Earth Gravity” which should excite the geomatics/geodetic community. The book is not yet available but will soon publish by Springer.

The Hunt for Earth Gravity (source – springer)

Prof John was with geophysics dept at London Uni until his retirement in 2004.

Contents;

The beginning; The making of a map; The astronomers; The synthesis; The figure of the Earth; The attraction of mountains; The pitfalls of pendulums; Change of a change; The rise and fall of springs; The challenges of motion; The return of the gradient; A map of the World; Epilogue; The Codas.

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The task of determining size and shape of the Earth has for long been one the main challenges undertook by geodesists.  Among the most active participants contributing in this field is the French Academy of Science. Their contributions were documented and can be accessed by interested researchers for re-assessing the historical works done by big names in geodesy of the past likes Cassini, Bouguer, Clairaut and many more.

At least there were two doctoral thesis in history have been written on such topic;

“The French Academy of Sciences Expedition to Spanish America 1735-1744” a PhD thesis by Robert Finn Erickson (b.1923). The thesis was for PhD in History, University of Illinois 1955.

“Astronomy and the Paris Academy of Sciences During the Eighteen Century” a PhD thesis by Seymour Leon Chapin (b.1926). The thesis was for PhD in Modern History, UCLA 1964.

Of particular interest of Chapin’s work is in Chapter 4 -“Geodetical work of the academician”

source – D Desktop225… Jan2017

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An interesting book on history of geodesy and more specifically on the quest for the figure of the Earth. When we start learning geodesy the introduction says that geodesy is the study about the shape and size of the Earth. So this book is very relevant with the introduction of geodesy.

The book was written by Michael Rand Hoarae (b.1933) of London University.

Routledge publication

the contents:

Chp 1 A dispute in the making; Chp 2 Prelude to an odyssey; Chp 3 Some technicalities; Chp 4 The Lapland expedition; Chp 5 The Peru expedition; Chp 6 Meanwhile in Paris; Chp 7 Death and deliverance; Chp 8 A grievous aftermath; Chp 9 Once more unto the Meridian; Chp 10 A modern postscript.

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There were so many textbooks on geodesy been written and already available. But the developments in  geodesy are keep on going and these drive new book to be written so that the new trends in geodesy are covered. Recently a new book on geodesy entitled “Introduction to Geodesy” was published (available from Feb 2018). The book is 239 pages and sells at Amazon at USD74 (hardcover).

Introduction to Geodesy

(source – amazon)

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Membaca mengenai sejarah perkembangan komputer tentunya menimbulkan rasa kagum bagaimana mesin dicipta dan dibangunkan untuk membantu hitungan dan pengiraan matematik dan lain-lain tugas. Antara komputer yang awal dibangunkan ialah ENIAC (Electronic Numerical Integrator and Computer). Ia dibangunkan untuk US Army dan pada asalnya tempatkan di Pensylvania University pada Feb 1946.

Komputer ENIAC

(source – computer history dan wiki)

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FIG has announced the inauguration of the Global Surveyors Day which is to be celebrated on March 21.

The poster

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IAG 147 – International Symposium on Earth and Environmental Sciences for Future Generations is the most recent publication of IAG published by Springer. It is actually the proceedings of  the IAG General Assembly held in Prague July, 2015.

IAG 147

Among the paper presented were;

i) A new Argentina gravimetric geoid model: GEOIDEAR by Pinon, Zhang, Wu and Ciambare. The work was done mainly by Pinon in RMIT Melbourne.

ii) History of monitoring Earth orientation.

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Quiz 1 for subject Industrial Survey was held this morning. All students registered attending the session. The quiz covers the first few lectures particularly on the introduction to IS and its basic concept.

Photo 1

Photo 2

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Perlu baca semula kandungan lecture ini.

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The work on Champ’s GGM at  the Astronomical Institute, University of Berne (AIUB) is led by Lars Prange (Prange et al, 2009). The team consist also Jaggi, Beutler, Dach and Roland L Mervant. Early work was implemented using Champ data set March 2002 to January 2003 (342 days). The computation is using celestial mechanic approach and make use of Eigen2 as priori gravity model

The result ~ AIUB-Champ01S is complete to degree and order 90. The accuracy is determined with comparison made against Eigen-GL04C, EGM96 and ITG Champ01 (considered the best Champ only model). AIUB then is claimed as giving the best result – proven at higher degree coefficient solution; but slightly minor problem in lower degree harmonic degree 15 to 20.

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