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Niche Modeling Perspective on Geographic Range Predictions in the Marine Environment Using a Machine-learning Algorithm
Geographic Range Predictions Machine-learning Algorithm
2015/7/31
Biological communities are changing drastically in response to global climate change (Walther et al., 2002), changes in use by human populations (Krishtalka et al., 2002), and introduction of exotic s...
Simulating the Long-Range Swell of Internal Waves Generated by Ocean Storms
Ocean Storms Internal Waves
2015/7/14
Near-inertial waves (NIWs) are a special class of internal gravity waves with periods set by planetary rotation and latitude (e.g., at 30° latitude, one cycle per 24 hours). They are notable because t...
15-year analysis of blue whale range off California finds conflict with shipping lanes
15-year analysis blue whale range California finds conflict shipping lanes
2014/8/14
A comprehensive 15-year analysis of the movements of satellite-tagged blue whales off the West Coast of the United States found that their favored feeding areas are bisected by heavily used shipping l...
Aquatic algae can sense an unexpectedly wide range of color, allowing them to sense and adapt to changing light conditions in lakes and oceans. The study by researchers at UC Davis was published earli...
Measurement method of the concentration of matter using optical property of seawater in visible wavelength range
concentration of matter optical property seawater visible wavelength range
2009/4/8
It is known that ocean color depends on contained materials in seawater. It is possible to use it for detecting significant information of sea. Since the reflection and absorbance of light can be ex...
An Experimental Study of the Resonant Instability of an Internal Wave of Mode 3 Over a Range of Driving Frequencies
Resonant Instability Internal Wave Driving Frequencies
2009/3/26
An experimental study of the stability of a progressive internal wave of mode 3 propagating down a long tank filled with a linearly stratified salt solution is conducted over the range 0.45ω3/N0.80, w...
On Phillips’Theory of Equilibrium Range in the Spectra of Wind-Generated Gravity Waves
Equilibrium Range Wind-Generated Gravity Waves
2009/3/24
Phillips' hypothesis concerning the equilibrium range in the spectrum of wind-generated surface waves in deep water can be expressed either in the frequency form S(ω)ω−5 or the wavenumber form (...
Pressure Fluctuations on the Open Ocean Floor Over a Broad Frequency Range：New Program and Early Results
Pressure Fluctuations Broad Frequency Range Open Ocean Floor
2009/2/19
A two-month ocean-floor pressure record obtained 330 km to the east of the main island of Hawaii by means of a Bourdon tube-type transducer with optical readout is discussed in detail. An approach to ...
Observations of Strongly Nonlinear Internal Motion in the Open Sea Using a Range-Gated Doppler Sonar
Strongly Nonlinear Internal Motion Open Sea Range-Gated Doppler Sonar
2009/2/13
A Doppler sonar has been developed at the Marine Physical Laboratory for the remote measurement of the upper ocean velocity field. The sonar transmits a 1° beam at 87.5 kHz, with 3 KW peak power. The ...
Normal Modes of the World Ocean. Part II：Description of Modes in the Period Range 8 to 80 Hours
World Ocean Period Range 8 80 Hours
2009/2/9
We have calculated normal modes with period between 8 and 80 h for a domain consisting of the Arctic, Atlantic, Indian and Pacific oceans. In this period range the numerical model has 56 modes, of whi...
On the Effects of Finite Depth on Wind-Wave Spectra：1. A Comparison with Deep-Water Equilibrium-Range Slope and Other Spectral Parameters
Wind-Wave Spectra Deep-Water
2009/2/7
Spectral parameters calculated from wind-wave measurements in a finite-depth restricted-fetch estuary are compared with similar deep-water parameters. The equilibrium range of these finite-depth spect...
Measurements of Gulf Stream Meandering and Evidence of Seasonal Thermocline Development Using Long-Range Acoustic Transmissions
Gulf Stream Meandering Seasonal Thermocline Development Long-Range Acoustic Transmissions
2009/2/6
Phase-coded signals with 60 rms resolution were transmitted twice weekly for several months from acoustic sources at 2000 m depth in the Sargasso Sea to three bottom-mounted receives designed as West,...
On the Theory of the Equilibrium Range in the Spectrum of Wind-Generated Gravity Waves
Equilibrium Range Wind-Generated Gravity Waves
2009/2/5
It is shown that an exact analog of Kolmogoroff's spectrum in a random field of weekly nonlinear surface gravity waves gives a spectral form for frequency spectra S(ω) ω−4 in close agreement wi...
Variability of Structure and Transport of the Florida Current in the Period Range of Days to Seasonal
Florida Current Period Range Seasonal
2009/1/6
Current measurements with five repeated moored arrays were carried out from April 1982 to June 1984 across the Florida Current between West Palm Beach and Grand Bahama Island; a reduced sixth array wa...
Implications of an f−4 Equilibrium Range for Wind-Generated Waves
f− 4 Equilibrium Range Wind-Generated Waves
2008/12/30
The existence of an f−5 equilibrium range was hypothesized for middle to high frequencies for a well-developed sea generated by the physical parameters of gross sea state in the pioneering work ...