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# Giaotrinh_AVCN

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## 100 câu hỏi thi GDV - Kế toán - Ngân quỹ (2015-2016) (Có Đáp án)

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### Thông tin tài liệu

LESSON 1
INTRODUCTION TO GEODESY AND CARTOGRAPHY
1.1.1. Definition of geodesy
Geodesy,  also  known  as geodetics  or  Geodetic  Engineering,  a  branch  of applied
Mathematics and Earth  sciences,  is  the  scientific  discipline  that  deals  with  the
measurement  and  representation of the Earth, including its gravitational field, in a threedimensional time-varying space. Geodesists also study geodynamical phenomena such
as crustal motion, tides,  and polar  motion.  For  this,  they  design  global  and
national control  networks,  using space  and  terrestrial  techniques  while  relying
on datums and coordinate systems.
Geodesy  from the  Greek word  (or  geodaisia),  is primarily concerned with positioning
within the temporally varying gravity field. Somewhat obsolete nowadays, geodesy,  in
the German-speaking world, is divided into "Higher Geodesy", which is concerned with
measuring  the  Earth  on  the  global  scale,  and  "Practical  Geodesy"  or  "Engineering
Geodesy", which is concerned with measuring specific parts or regions of the Earth, and
which includes surveying.
The shape of the Earth is to a large extent the result of its rotation, which causes its
equatorial bulge, and the competition of geological processes such as the  collision of
plates and the volcanism, resisted by the Earth's gravity field. This applies to the solid
surface,  the liquid surface (dynamic sea surface topography) and the Earth's atmosphere.
For this reason, the study of the Earth's gravity field is called physical geodesy by some.
Vocabulary
Geodesy (n): trắc địa học
Geodesist (n): nhà trắc địa học
Gravitational field: trường trọng lực
Geodynamical phenomena: hiện tượng địa động lực
Crustal motion: chuyển động của vỏ trái đất
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