Results 91 to 100 of about 24,901,573 (306)

300 Years of Degradation in Wales Estuaries and Coasts

Natural Resources Forum, EarlyView.
ABSTRACT The world's oceans are in a severe state of degradation, yet our understanding of that degradation is often based on changes observed only in the past 20–50 years. This narrow view leads to marine conservation efforts that aim to preserve already degraded ecosystems, shaped by shifted ecological baselines.
Richard K. F. Unsworth, Blaise Bullimore, Leanne C. Cullen‐Unsworth, Benjamin L. H. Jones   +3 more
wiley   +1 more source

Recovering Bathymetry Using BP Neural Network Combined with Modified Gravity–Geologic Method: A Case Study in the South China Sea

Remote Sensing
The gravity–geologic method (GGM) is widely used for bathymetric predictions. However, the conventional GGM cannot be applied in regions without actual bathymetric data.
Xiaodong Chen, Min Zhong, Mingzhi Sun, Dechao An, Wei Feng, Meng Yang   +5 more
doaj   +1 more source

Climatic–Anthropogenic Synergy Drives Escalating Minimum Area Requirements and Connectivity‐Protection Mismatch in a Karst‐Endemic Primate

Integrative Zoology, EarlyView.
Climate change and anthropogenic activities drive antagonistic degradation of landscape connectivity for endangered François’ langur (1987–2024), causing 48.8% habitat loss, north‐south fragmentation, and centroid migration (1.2 km/yr). Despite protected areas buffering connectivity, static management fails dynamic priority habitats; we propose ...
Guangmei Yang, Heqin Cao, Tuo Shen, Jipeng Tian, Yixin Diao, Haijun Su   +5 more
wiley   +1 more source

Refraction-aware integrated Georeferencing of bathymetric Laser Scanning Data [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
Bathymetric Laser Scanning (BLS) enables high-resolution mapping of underwater topography using green-wavelength laser pulses that penetrate the water column.
G. Mandlburger, L. Dammert, J. Rhomberg-Kauert, F. Pöppl, M. Pfennigbauer   +4 more
doaj   +1 more source

Submerged geomorphic record of Quaternary palaeoshorelines: terraces and clinothems along a shelf‐edge in the Žirje Archipelago, Adriatic Sea

Boreas, EarlyView.
Numerous studies have shown that during the Quaternary there were substantial fluctuations in sea level in response to glacial–interglacial climate variability, reaching lowstand positions up to 134 m below the present sea level (b.s.l.). These fluctuations have had a strong influence on the morphology of shallow shelf seas, which preserve evidence of ...
Ozren Hasan, Dea Brunović, Natalia Smrkulj, Maria Geraga, Dimitris Christodoulou, Nikolina Ilijanić, George Papatheodorou, Slobodan Miko   +7 more
wiley   +1 more source

Comparative Analysis of Wavelet-Based Anisotropy Index Calculation for Bathymetric Data

Sakarya University Journal of Computer and Information Sciences
This study investigates the relationship between seabed structures and ship manoeuvrability by applying an anisotropic transformation to bathymetric data. The one of the selected study areas is the downstream section of the Mississippi River in Chalmette,
Füsun Er, Şengül Ersoy, Yıldıray Yalman   +2 more
doaj  

SDUST2023BCO: a global seafloor model determined from a multi-layer perceptron neural network using multi-source differential marine geodetic data [PDF]

Earth System Science Data
Seafloor topography, as a fundamental marine spatial geographic information, plays a vital role in marine observation and science research. With the growing demand for high-precision bathymetric models, a multi-layer perceptron (MLP) neural network is ...
S. Zhou, S. Zhou, J. Guo, H. Zhang, Y. Jia, H. Sun, X. Liu, D. An   +7 more
doaj   +1 more source

On Quality Analysis of Filtration Methods for Bathymetric Data in Harbour Areas through QPS Qimera Software. [PDF]

Sensors (Basel), 2023
Kazimierski W, Jaremba M.
europepmc   +1 more source

Bathymetric Mapping Using IKONOS Multispectral Data

GIScience & Remote Sensing, 2004
The objective of this research was to develop an accurate bathymetric map for an area around Roatan Island, Honduras using high-resolution multispectral IKONOS data based on a variation of a linear regression model. Linear regression models estimate water depths by regressing brightness values over known benthos (albeit non-homogeneous) and known ...
Deepak Mishra, Sunil Narumalani, Merlin Lawson, Donald Rundquist   +3 more
openaire   +1 more source

Development of Bathymetric Data for Ocean Numerical Model Using Sea-Floor Topography Data: BADA Ver.1

Journal of Korean Society of Coastal and Ocean Engineers, 2019
Recently, the importance of highly accurate bathymetric data is greatly emphasized by the increased use of the ocean numerical models and research results in major areas such as ocean forecasting and natural disaster.
Sang-Cheol Yoo, J. Mun, W. Park, Gwang-Ho Seo, Seok Jae Gwon, Ryong Heo   +5 more
semanticscholar   +1 more source