Geodetic Heights (Sanso et al 2019)

A most recent book “Geodetic Heights’ written by Sanso, Reguzzoni and Barzaghi is already available. The book is published by Springer.

Geodetic Heights

Contents consist of seven chapters;

Introduction

General Coordinates in R (power 3)

The Earth Gravity Field: basics

The anomalous potential and its determination

Geodetic coordinate systems

The relation between levelling, geodetic and other unholonomic heights

The height datum problem

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Recent papers Jan-Apr 2019

Papers from recent journal;

Wang, Jianqiang & Wu, Keqiang “Construction of regional geoid using a virtual spherical harmonics model”. Journal of Applied Geodesy, Vol 13 No 2, April 2019.

Kermarrec, G., Neumann, I and Schon, S “The stochastic model for GNSS and TLS observations: a proposal to account for correlations in least squares adjustment. Journal of Applied Geodesy, Vol 13 No 2, April 2019.

Abrehdary, M., Sjoberg, LE and Sampietro, D “Contribution of satellite altimetry in modelling Moho density contrast in oceanic areas”. Journal of Applied Geodesy, Vol 13 No 1, Jan 2019.

Shengxiang Huang, Guangqing Li, Xinpeng Wang & Wen Zhang “Geodetic network design and data processing for Hong Kong-Zhuhai-Macau link immersed tunnel”. Survey Review, Vol 31, No 365, 2019.

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Development of a local geoid model at the Federal District Brazil (2017)

Sebuah artikel mengenai geoid 'Development of a local geoid model at the Federal District, Brazil, patched by the r-c-r technique following Helmert's condensation method' disediakan oleh Marotta dan Vidotti (Universidade de Brasilia) terbit dalam Bulletin of Geodetic Science, 23(3) pada 2017.

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Local Evaluation of EGM - Iran (Foroughi 2017)

Kajian bersama oleh ahli geodesi UNB dan School of Surveying, Tehran. Artikel terbit dalam jurnal Geod & Carto 43(1):1-13 tahun 2017.

Extract:

The results of evaluating selected global gravity models in Iran indicate that the EIGEN-6C4 achieves the lowest RMS for estimating the geoid heights. EGM08 predicts the closest results to terrestrial gravity anomalies. DIR-R5 GOCE satellite-only model estimates the low-frequency part of gravity field more accurately. The best prediction of marine gravity anomalies is also achieved by EGM08.

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GGMs evaluation for strip area project Turkey (2016)

Artikel tentang kajian "An evaluation of recent GGMs for strip area project in Turkey" boleh dibaca sebagai rujukan. Artikel oleh Serkan Doganalp (dari Konya) terbit dalam Earth Sciences Research Journal 20(3) tahun 2016.

Within the scope of this study, the 210-km long Konya-Ankara high-speed train project was selected in order to investigate GGMs performance. When the study area is examined, it can be stated that the route has a flat ground and there is not a sudden height-change structure.

According to results, the standard deviation was obtained as approximately 12 cm after comparing with true values of the geoid heights obtained from the best match GGMs. The best GGMs are obtained eigen-6c4, eigen-grace01s, egm2008, eigen-6c3stat, and eigen-6c2, respectively

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Earth Gravity Models Spectral Assessment - Tsoulis & Patlakis (2013)

Penilaian model gravity bumi adalah satu proses yang sangat perlu dibuat untuk kerja fizikal geodesi bersangkutan hitungan geoid. Bagi tujuan tersebut dan untuk tujuan literature review paper 'A spectral assessment review of current satellite-only and combined Earth gravity models' oleh Tsoulis dan Patlakis sangat perlu dibaca. Paper ini diterbit pada 2013 dalam Reviews of Geophysics 51/2013. Paper mengandungi 58 m/surat. Tsoulis dari Aristotle U of Thessaloniki.

1B geobaca

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Geodetic Heights (Sanso et al 2019)

A very recent book.

Buku Radio Astronomy - Observing the Invisible Universe

Buku terbitan The Great Courses.

Extract from Amazon (link):

For a few hundred thousand years, we used our eyes as our primary astronomical tool. But it all changed in the 1930s when a young engineer named Karl Jansky detected radiation below the visible part of the spectrum emanating from an astronomical object - and radio astronomy was born. Radio Astronomy: Observing the Invisible Universe takes you on a thrilling journey through astounding discoveries with Felix J. Lockman, Ph.D., of the Green Bank Observatory

Radio Astronomy

(Observing the Invisible Universe)

Contents:

1B geobaca

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Astronomer Silam - Aristarchus of Samos

Seorang lagi ahli falsafah  silam Greek dan juga ahli astronomi adalah Aristarchus of Samos. Beliau lahir sekitar 310 BC di Samos dan meninggal dunia sekitar 230 BC di Alexandria Egypt. Beliau merupakan tokoh awal yang mengetengahkan konsep geosentrik - bumi berputar mengelilingi matahari. Baca artikel tentang beliau di wiki.

Aristarchus of Samos (source - link)

Sedikit coretan oleh Aristarchus

Setem khas kenangan Aristarchus

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