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Armen Z. Ter-Martirosyan, Valery P. Kivliuk, Ilya O. Isaev and Victoria V. Rud
With the evolution of modern cosmopolitan cities, subterranean spaces have developed in dense urban environments. Hence, new metro tunnels often intersect with those in operation. The top-priority task of designers is to evaluate the effect of new constr...
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Jongdae Jung, Yeongjun Lee, Jeonghong Park and Tae-Kyeong Yeu
Monitoring offshore infrastructure is a challenging task owing to the harsh ocean environment. To reduce human involvement in this task, this study proposes an autonomous surface vehicle (ASV)-based structural monitoring system for inspecting power cable...
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Mohammed El-Diasty, Mosbeh R. Kaloop and Faisal Alsaaq
A traditional shore-based discrete point chart datum (CD) that represents the lowest astronomical tide (LAT) in Saudi Arabia using tide gauge data is utilized to reduce the observed depth collected from hydrographic surveying test to CD-referenced depth ...
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Miguel C. Leon, Tamara Heartsill-Scalley, Iván Santiago and William H. McDowell
Streams and rivers of the Luquillo Experimental Forest, Puerto Rico, have been the subject of extensive watershed and aquatic research since the 1980s. This research includes understanding stream export of nutrients and coarse particulate organic matter,...
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Serdar Erol, Emrah Özögel, Ramazan Alper Kuçak and Bihter Erol
This investigation evaluates the performance of digital terrain models (DTMs) generated in different vertical datums by aerial LiDAR and unmanned aerial vehicle (UAV) photogrammetry techniques, for the determination and validation of local geoid models. ...
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Mohammed El-Diasty
Developing an accurate Lowest Astronomical Tide (LAT) in a continuous form is essential for many maritime applications as it can be employed to develop an accurate continuous vertical control datum for hydrographic surveys applications and to produce acc...
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Anselme Muzirafuti, Giovanni Barreca, Antonio Crupi, Giancarlo Faina, Diego Paltrinieri, Stefania Lanza and Giovanni Randazzo
The results of absolute satellite-derived bathymetry (SDB) are presented in the current study. A comparative analysis was conducted on empirical methods in order to explore the potential of SDB in shallow water on the coast of Misano, Italy. Operations w...
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Wei Wu, Edward Myers, Lei Shi, Kurt Hess, Michael Michalski and Stephen White
Tidal datums are key components in NOAA?s Vertical Datum transformation project (VDatum), which enables effective vertical transformation of the water level between tidal, orthometric, and ellipsoid -based three-dimensional reference systems. An initial ...
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Xingfu Zhang, Yongyi Zhang, Bofeng Li and Guangxin Qiu
In the construction of super-tall buildings, it is rather important to control the verticality. In general, a laser plummet is used to transmit coordinates of reference points from the ground layer-by-layer, which can effectively control the verticality ...
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Wen-Hau Lan, Chung-Yen Kuo, Huan-Chin Kao, Li-Ching Lin, C. K. Shum, Kuo-Hsin Tseng, Jung-Chieh Chang
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The Taiwanese government has established a complete tide gauge network along the coastline for accurate sea-level monitoring. In this study, we analyze several factors impacting the determination of absolute or geocentric sea-level trends?including ocean...
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