Results 61 to 70 of about 117,029 (163)

Development of a MATLAB-based graphic user interface (GUI) for 3D datum transformation using Molodensky-Badekas model

open access: yesGeomatica
Datum transformation is fundamental in geospatial data analysis, enabling the integration of datasets referenced to different geodetic datums. Given the mathematical complexity of datum transformations, this study presents a MATLAB-based graphical user ...
Solomon O. Faruna, PhD   +6 more
doaj   +1 more source

Towards a new South African geodetic datum [PDF]

open access: yes, 1989
Bibliography: pages 134-140.The overall scale and orientation of the South African trigonometrical readjustment will depend both on the traditional distances and azimuths and on TRANSIT Doppler observations.
Newling, M
core   +1 more source

The Geocentric Orientation Vector for the Australian Geodetic Datum [PDF]

open access: yesGeophysical Journal International, 1971
Summary The geocentric orientation vector is defined for the Australian Geodetic Datum on the assumption that the geoid has the same potential as the value on Reference Ellipsoid 1967 on adopting Reference System 1967. It is shown that only the free air geoid need be considered to provide the required definition in the Australian region with a ...
openaire   +1 more source

Sea‐Level Change in Hong Kong From Tide Gauges, GNSS, and Satellite Altimetry

open access: yesJournal of Geophysical Research: Oceans, Volume 131, Issue 9, September 2026.
Abstract As a densely populated, highly urbanized coastal city, Hong Kong is particularly vulnerable to sea‐level rise, which amplifies flood risk and threatens coastal infrastructure, economies, and ecosystems. We combine observations from tide gauges, conventional gridded satellite altimetry, coastal‐retracked altimetry, and Global Navigation ...
Dongju Peng   +5 more
wiley   +1 more source

On ill-conditioning in 3D Similarity Transformation

open access: yesInternational Journal of Environment and Geoinformatics, 2015
3D similarity transformations are often used for datum transformation in Geomatic Engineering. The transformations are routinely performed between the point coordinates evaluated from GNSS (Global Navigation Satellite Systems) observations and the ...
Orhan Kurt
doaj   +1 more source

Readjustment of the national geodetic vertical datum

open access: yesEos, Transactions American Geophysical Union, 1980
New geodetic techniques and computer technology are providing scientists in the United States and other countries of North America with the precise tools needed to modernize the North American horizontal and vertical geodetic control networks—a web of geodetic survey monuments that spans the continent.
openaire   +1 more source

The Parguera Fault System: Possible Quaternary Reactivation of Bedrock Faults in Southwest Puerto Rico

open access: yesTectonics, Volume 45, Issue 9, September 2026.
Abstract We present evidence of a previously unrecognized east‐west‐trending normal fault, named the Parguera Fault, in southwest Puerto Rico. The fault is located at the northwestern edge of seismicity from the southwest Puerto Rico seismic sequence that began in 2019, near the coastal town of La Parguera.
Jessica Thompson Jobe   +12 more
wiley   +1 more source

Datum Geodetik Batas Maritim Indonesia – Singapura: Status dan Permasalahannya

open access: yesJournal of Mathematical and Fundamental Sciences, 2013
Maritime boundary between Indonesia and Singapore in the strait of Singapore has been defined by the territorial sea boundary treaty of 1973.In this treaty, geodetic datum of the geographic coordinates of six boundary points between Indonesia and ...
Hasanuddin Z. Abidin   +3 more
doaj   +1 more source

Distribution models of polysphinctine parasitoid wasps (Hymenoptera: Ichneumonidae) reveal sampling bias and flag potentially overlooked host interactions

open access: yesInsect Conservation and Diversity, Volume 19, Issue 5, Page 980-1001, September 2026.
We quantified the geographical overlap between parasitoid wasps and their known host spiders. We could assess which parasitoid species have more limited information about their interactions and are subject to geographical survey bias. We generated sampling bias maps to assist other researchers in identifying where the main sampling gaps are.
Gabriel M. Xavier   +3 more
wiley   +1 more source

Determination of the optimal geodetic datum in a horizontal geodetic network of the Formin hydroelectric power plant [PDF]

open access: yes, 2013
In the graduation thesis, micro trigonometric network of the Formin hydroelectric power plant's dam is presented. In accordance with law, control measurements of the network are carried out twice a year since 1978.
Šalamon, Nataša
core  

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