Search Results - "HOLLAND, W C"

Seismic detection of a subglacial lake near the South Pole, Antarctica by Peters, L. E., Anandakrishnan, S., Holland, C. W., Horgan, H. J., Blankenship, D. D., Voigt, D. E.

“…Seismic reflection data are analyzed to verify radar identification of a subglaical lake near the geographic South Pole. The seismic amplitude variation with…”
Get full text

Layer filtering for seafloor scatterers imaging by Pinson, S, Holland, C W

“…The image source method in acoustics is well known to simulate reverberation. It has also been recently used for characterization of seafloor sound-speed…”
Get full text

Seafloor sound-speed profile and interface dip angle characterization by the image source method by Pinson, S, Holland, C W

“…The image source method is an efficient way to perform a sound-speed tomography for seafloor characterization. To date, however, it has been limited by a…”
Get full text

Range dependent sediment sound speed profile measurements using the image source method by Pinson, S, Guillon, L, Holland, C W

“…This paper presents a range dependent sediment sound speed profile measurement obtained using the image source method. This technique is based on the analysis…”
Get full text

Using ADV backscatter strength for measuring suspended cohesive sediment concentration by Ha, H.K., Hsu, W.-Y., Maa, J.P.-Y., Shao, Y.Y., Holland, C.W.

“…Laboratory experiments were conducted at two institutes to reveal the relationship between acoustic backscatter strength and suspended sediment concentration…”
Get full text

Geoacoustic Characterisation of Fine-grained Sediments using Single and Multiple Reflection Data by Hermand, J-P, Holland, C W

“…Fine-grained sediments commonly occur in areas of the continental shelf where wave and current energy are weak. Bulk density, compressional wave speed and…”
Get full text

On the use of an autonomous underwater vehicle for seabed characterization by Nielsen, P. L., Holland, C. W., Hollett, R.

“…In 2009 NURC conducted the CLUTTER’09 experiment on the Malta Plateau, south of Sicily, in collaboration with the CLUTTER JRP partners from USA and Canada. One…”
Get full text

Lexicographic exponentiation of chains by Holland, W. C., Kuhlmann, S., McCleary, S. H.

“…The lexicographic power ΔΓ of chains Δ and Γ is, roughly, the Cartesian power Πγ∈Γ Δ, totally ordered lexicographically from the left. Here the focus is on…”
Get full text

High-resolution geoacoustic inversion in shallow water: a joint time- and frequency-domain technique by Holland, CW, Osler, J

“…High-resolution geoacoustic data are required for accurate predictions of acoustic propagation and scattering in shallow water. Since direct measurement of…”
Get full text

Seabed reflection measurement uncertainty by Holland, Charles W

“…The seabed reflection coefficient is a fundamental property of the ocean waveguide. Measurements of the frequency and angular dependence of the reflection…”
Get full text

Coupled scattering and reflection measurements in shallow water by Holland, C.W.

“…The characteristics of shallow-water reverberation are often controlled by scattering from the seabed. While scattering mechanisms are understood in general,…”
Get full text

Geoacoustic inversion for fine-grained sediments by Holland, Charles W

“…Fine-grained water saturated sediments like silty clays have the curious property that the speed of sound through its bulk medium is lower than that of the…”
Get full text

Mud volcanoes discovered offshore Sicily by Holland, Charles W, Etiope, Giuseppe, Milkov, Alexei V, Michelozzi, Enzo, Favali, Paolo

“…Numerous active mud volcanoes have been recognized for the first time from seismic reflection and sidescan surveys carried out in 2002 over the Hyblean–Malta…”
Get full text

Long range acoustic imaging of the continental shelf environment : The Acoustic Clutter Reconnaissance Experiment 2001 by RATILAL, Purnima, YISAN LAI, SYMONDS, Deanelle T, RUHLMANN, Lilimar A, PRESTON, John R, SCHEER, Edward K, GARR, Michael T, HOLLAND, Charles W, GOFF, John A, MAKRIS, Nicholas C

“…An active sonar system is used to image wide areas of the continental shelf environment by long-range echo sounding at low frequency. The bistatic system,…”
Get full text

Measurement technique for bottom scattering in shallow water by Holland, CW, Hollett, R, Troiano, L

“…Sonar performance predictions of reverberation in shallow water rely upon good estimates of the bottom-scattering strength. However, little is understood about…”
Get full text

Relation between dopaminergic control of pituitary lactotroph function and deceleration of age-related changes in serum prolactin of diet-restricted rats by Atterwill, C K, Brown, C G, Conybeare, G, Holland, C W, Jones, C A

“…Pituitary lactotroph function has been examined in diet-restricted (6 hr/day) male and female rats and compared with that in animals fed ad lib. After 12…”
Get more information

Remote sensing of sediment density and velocity gradients in the transition layer by HOLLAND, Charles W, DETTMER, Jan, DOSSO, Stan E

“…The geoacoustic properties of marine sediments, e.g., bulk density and compressional velocity, commonly exhibit large variations in depth near the…”
Get full text

A technique for measuring in-situ compressional wave speed dispersion in marine sediments by Holland, C.W., Dettmer, J., Dosso, S.E.

“…Compressional speed dispersion exists in all marine sediments. If the dispersion is great enough it may play a significant role in acoustic interaction with…”
Get full text

Broad-band Time Domain Modeling of Sonar Clutter in Range Dependent Waveguides by LePage, K.D., Neumann, P., Holland, C.W.

“…A broadband time domain reverberation and clutter model has been developed to aid in the development of a better understanding of the environmental and system…”
Get full text

Sub-bottom scattering: A modeling approach by Holland, Charles W., Neumann, Peter

“…Bottom scatter strength data exhibit artifacts when the sub-bottom plays a role in the scattering process. The artifacts arise from the classical assumption in…”
Get full text