نتایج جستجو برای: sea bed shapes
تعداد نتایج: 226390 فیلتر نتایج به سال:
Shannon Fairres (ex-Botany grad student) wanted to determine how the amount of water flow varied in various parts of beds of giant kelp (Macrocystis pyrifera). Giant kelp is a marine brown alga found along the Pacific coast of North America. Buoyant fronds grow from an attachment (“holdfast”) on the sea floor, reaching lengths of up to 60 m. The upper parts of the fronds often form a dense cano...
The classification and mapping of habitats in Wadden Sea areas is an important issue of marine monitoring. In the framework of a German research project, we investigate different modern remote sensing data for this task. In this paper, our focus is on the potential of airborne laser scanning data for the classification. Therefore, we use Conditional Random Fields (CRF), a probabilistic supervis...
The orbit and instrumental measurement of the Gravity Field and Steady State Ocean Circulation Explorer (GOCE) satellite mission offer the highest ever resolution capabilities for mapping Earth’s gravity field from space. However, past analysis predicted that GOCE would not detect changes in ice sheet mass. Here we demonstrate that GOCE gravity gradiometry observations can be combined with Grav...
This paper presents an application to validate an acoustic signal characterization scheme for ocean acoustic tomography and geoacoustic inversions proposed by Taroudakis, Tzagkarakis, and Tsakalides [J. Acoust. Soc. Am. 119, 1396-1405 (2006)] using data from an experiment at sea. The data were collected during the Shallow water '06 (SW06) experiment off the New Jersey Continental Shelf and the ...
The history of glaciations on Southern Hemisphere sub-polar islands is unclear. Debate surrounds the extent and timing of the last glacial advance and termination on sub-Antarctic South Georgia in particular. Here, using sea-floor geophysical data and marine sediment cores, we resolve the record of glaciation offshore of South Georgia through the transition from the Last Glacial Maximum to Holo...
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