Zobrazeno 1 - 10
of 13
pro vyhledávání: '"Lawrence C. Hufnagle"'
Autor:
Charles H. Greene, Erin L. Meyer-Gutbrod, Louise P. McGarry, Lawrence C. Hufnagle Jr, Dezhang Chu, Sam McClatchie, Asa Packer, Jae-Byung Jung, Timothy Acker, Huck Dorn, Chris Pelkie
Publikováno v:
Oceanography, Vol 27, Iss 4, Pp 168-174 (2014)
Possessing the world's largest Exclusive Economic Zone (EEZ), the United States enjoys the benefits of a multi-billion dollar commercial fishing industry. Along with these benefits comes the enormous task of assessing the status of the nation's comme
Externí odkaz:
https://doaj.org/article/bd89fba47e424b9b8765d806099c7f2d
Autor:
Sandra Parker-Stetter, Dezhang Chu, Chelsea Stanley, Julia E.R. Getsiv-Clemons, Rebecca E. Thomas, Stéphane Gauthier, Lawrence C. Hufnagle
Publikováno v:
OCEANS 2019 MTS/IEEE SEATTLE.
Five Unmanned Surface Vehicles (USVs) were deployed off the west coasts of the U.S. and Canada in summer 2018 as a first step toward evaluating the effectiveness and efficacy of USVs as survey/research platforms. The Saildrone USVs (Saildrone, Inc.)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3df63762bec6a78604e13ff7c84c3881
https://doi.org/10.23919/oceans40490.2019.8962778
https://doi.org/10.23919/oceans40490.2019.8962778
Publikováno v:
Marine Technology Society Journal. 49:59-69
An acoustic imaging microtome system (AIMS) was constructed to map the internal structure of fish. The system consists of two pairs of high-frequency (4.5 MHz) transmit-and-receive planar arrays, with one pair in the vertical plane and the other in t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::228e266f9c2bb7abea39e832b6f74b2e
https://doi.org/10.4031/mtsj.49.2.8
https://doi.org/10.4031/mtsj.49.2.8
Publikováno v:
ICES Journal of Marine Science. 62:1168-1179
The EK500 has been the state-of-the-art scientific echosounder for surveying marine fish stocks for over a decade; the EK60 is its successor. Ensuring comparability in performance is vital during the transition from the EK500 to the EK60. To quantify
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::568cbfca1847574232e7b01a5fe021fb
https://doi.org/10.1016/j.icesjms.2005.02.014
https://doi.org/10.1016/j.icesjms.2005.02.014
Autor:
Mary K. Walker, Christine Berini, John J. Libal, Richard E. Peterson, Allan R. Batterman, Philip M. Cook, Lawrence C. Hufnagle, Brian C. Butterworth
Publikováno v:
Canadian Journal of Fisheries and Aquatic Sciences. 51:1410-1419
There were no signs of overt toxicity in sexually mature female lake trout (Salvelinus namaycush) exposed to either a control or a 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD)-containing diet for 11 wk prior to spawning. At spawning the maternally deri
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4215e924d17e05495b3c0b957ae4b772
https://doi.org/10.1139/f94-141
https://doi.org/10.1139/f94-141
Publikováno v:
Aquatic Toxicology. 22:15-37
To characterize the risk that polychlorinated dibenzo- p -dioxins (PCDDs), dibenzofurans (PCDFs), and biphenyls (PCBs) pose to salmonid early life stage survival, we developed a method to expose rainbow trout ( Oncorhynchus mykiss ) eggs to graded do
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1e93734c1ee6a287128dce27d222a781
https://doi.org/10.1016/0166-445x(92)90033-j
https://doi.org/10.1016/0166-445x(92)90033-j
Publikováno v:
Oceans '02 MTS/IEEE.
Directivity patterns of the Simrad SM2000 multibeam echo sounder, with 90-kHz and 200-kHz operating frequencies, have been measured in a calibration sea well at the Woods Hole Oceanographic Institution. A new transducer-mounting and -rotating system
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::935f6955f6ad439972f931444a287fa5
https://doi.org/10.1109/oceans.2002.1191844
https://doi.org/10.1109/oceans.2002.1191844
Autor:
J. Michael Jech, Dezhang Chu, Kenneth G. Foote, Larry A. Mayer, Kenneth C. Baldwin, Terence R. Hammar, Lawrence C. Hufnagle
Publikováno v:
The Journal of the Acoustical Society of America
Journal home page: http://scitation.aip.org/jasa/ Development of protocols for calibrating multibeam sonar by means of the standard-target method is documented. Particular systems used in the development work included three that provide the water-col
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::50e67becccf5b5e1b846ad8388e53007
https://pubmed.ncbi.nlm.nih.gov/15898644
https://pubmed.ncbi.nlm.nih.gov/15898644
Publikováno v:
Oceans '04 MTS/IEEE Techno-Ocean '04 (IEEE Cat. No.04CH37600).
Protocols developed for calibrating multibeam sonar have been applied to the calibration of the Simrad SM2000/90-kHz multibeam echo sounder at the WHOI acoustic test facility in a sea well on Iselin Dock. An external transmitter was oriented perpendi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a44dbb7c3ccb8b072f83108fdddf30ea
https://doi.org/10.1109/oceans.2004.1402956
https://doi.org/10.1109/oceans.2004.1402956
Autor:
Larry A. Mayer, Lawrence C. Hufnagle, Kenneth C. Baldwin, Stephen P. Liberatore, Dezhang Chu, A. McLeod, Terence R. Hammar, Kenneth G. Foote
Publikováno v:
Oceans 2003. Celebrating the Past ... Teaming Toward the Future (IEEE Cat. No.03CH37492).
Quantitative use of multibeam sonar requires calibration. Protocols for calibrating multibeam sonar in an absolute sense by means of a standard target are being developed. These protocols are illustrated for the Simrad SM2000 Multibeam Echo Sounder,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e0f66187387b62e13b24167ff4294c40
https://doi.org/10.1109/oceans.2003.178119
https://doi.org/10.1109/oceans.2003.178119