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  • Frankel, Adam S.  (6)
  • Comparative Studies. Non-European Languages/Literatures  (6)
  • EQ 1000  (6)
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Subjects(RVK)
  • Comparative Studies. Non-European Languages/Literatures  (6)
RVK
  • EQ 1000  (6)
  • 1
    Online Resource
    Online Resource
    Characterization of impact pile driving signals during installation of offshore wind turbine foundations
    Acoustical Society of America (ASA) ; 2020
    In:  The Journal of the Acoustical Society of America Vol. 147, No. 4 ( 2020-04-01), p. 2323-2333
    Details
    In: The Journal of the Acoustical Society of America, Acoustical Society of America (ASA), Vol. 147, No. 4 ( 2020-04-01), p. 2323-2333
    Abstract: Impact pile driving creates intense, impulsive sound that radiates into the surrounding environment. Piles driven vertically into the seabed generate an azimuthally symmetric underwater sound field whereas piles driven on an angle will generate an azimuthally dependent sound field. Measurements were made during pile driving of raked piles to secure jacket foundation structures to the seabed in waters off the northeastern coast of the U.S. at ranges between 500 m and 15 km. These measurements were analyzed to investigate variations in rise time, decay time, pulse duration, kurtosis, and sound received levels as a function of range and azimuth. Variations in the radiated sound field along opposing azimuths resulted in differences in measured sound exposure levels of up to 10 dB and greater due to the pile rake as the sound propagated in range. The raked pile configuration was modeled using an equivalent axisymmetric FEM model to describe the azimuthally dependent measured sound fields. Comparable sound level differences in the model results confirmed that the azimuthal discrepancy observed in the measured data was due to the inclination of the pile being driven relative to the receiver.
    Type of Medium: Online Resource
    ISSN: 0001-4966 , 1520-8524
    URL: Article
    DOI: 10.1121/10.0001035
    RVK:
    EQ 1000
    Language: English
    Publisher: Acoustical Society of America (ASA)
    Publication Date: 2020
    detail.hit.zdb_id: 1461063-2
    Location Call Number Limitation Availability
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    Online Resource
  • 2
    Online Resource
    Online Resource
    Passive acoustic monitoring during the construction of the Coastal Virginia Offshore Wind project
    Acoustical Society of America (ASA) ; 2022
    In:  The Journal of the Acoustical Society of America Vol. 151, No. 4_Supplement ( 2022-04-01), p. A239-A239
    Details
    In: The Journal of the Acoustical Society of America, Acoustical Society of America (ASA), Vol. 151, No. 4_Supplement ( 2022-04-01), p. A239-A239
    Abstract: A suite of hydrophone arrays was deployed to monitor pile driving sound and seafloor particle motion during construction of two wind turbine towers in the Coastal Virginia Offshore Wind (CVOW) project in May 2020. The primary objective of this passive acoustic monitoring (PAM) work was to assess the effectiveness of bubble curtains for underwater noise mitigation. The arrangement of the PAM tracks also enabled studies of azimuthal and range dependencies of pile driving sound propagation. Measurements of water temperature, salinity and surface heights were made during the monitoring period to assess underwater sound propagation conditions. PAM data showed that the bubble curtain effectively reduced the pile driving noise above 200 Hz, and a significant azimuthal dependency was observed. Statistical analyses of pile driving noise will be presented, along with recommendations for future wind farm construction monitoring, especially on marine mammal acoustic monitoring during construction. [Work supported by the Bureau of Ocean Energy Management]
    Type of Medium: Online Resource
    ISSN: 0001-4966 , 1520-8524
    URL: Article
    DOI: 10.1121/10.0011187
    RVK:
    EQ 1000
    Language: English
    Publisher: Acoustical Society of America (ASA)
    Publication Date: 2022
    detail.hit.zdb_id: 1461063-2
    Location Call Number Limitation Availability
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    Online Resource
  • 3
    Online Resource
    Online Resource
    Bubble curtain effectiveness during impact pile driving for monopile installation at the Coastal Virginia Offshore Wind project
    Acoustical Society of America (ASA) ; 2020
    In:  The Journal of the Acoustical Society of America Vol. 148, No. 4_Supplement ( 2020-10-01), p. 2627-2628
    Details
    In: The Journal of the Acoustical Society of America, Acoustical Society of America (ASA), Vol. 148, No. 4_Supplement ( 2020-10-01), p. 2627-2628
    Abstract: The Coastal Virginia Offshore Wind (CVOW) pilot project consists of two 6-megawatt wind turbines located 27 miles off the coast of Virginia Beach, VA. Monopile foundations with a diameter of 7.8 m at the seafloor were installed via impact pile driving on two separate days during May 2020. A double bubble curtain was used during the installation of one of the monopiles and no sound mitigation system was used during the installation of the second. The resulting acoustic field was measured during the impact pile driving using a suite of stationary and towed sensors to characterize the effectiveness of the bubble curtain in attenuating the sound levels at various ranges and azimuths. Metrics including the peak sound pressure level, sound exposure level, and kurtosis of each pile strike were determined and analyzed as a function of distance from the foundation. The frequency and azimuthal dependence of the bubble curtain effectiveness was also investigated. [Work supported by Bureau of Ocean Energy Management (BOEM.)]
    Type of Medium: Online Resource
    ISSN: 0001-4966 , 1520-8524
    URL: Article
    DOI: 10.1121/1.5147308
    RVK:
    EQ 1000
    Language: English
    Publisher: Acoustical Society of America (ASA)
    Publication Date: 2020
    detail.hit.zdb_id: 1461063-2
    Location Call Number Limitation Availability
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    Online Resource
  • 4
    Online Resource
    Online Resource
    Variations in the acoustic field recorded during pile-driving construction of the Block Island Wind Farm
    Acoustical Society of America (ASA) ; 2017
    In:  The Journal of the Acoustical Society of America Vol. 141, No. 5_Supplement ( 2017-05-01), p. 3993-3993
    Details
    In: The Journal of the Acoustical Society of America, Acoustical Society of America (ASA), Vol. 141, No. 5_Supplement ( 2017-05-01), p. 3993-3993
    Abstract: The Block Island Wind Farm, the first offshore wind farm in the United States, consists of five 6-MW turbines three miles southeast of Block Island, Rhode Island in water depths of approximately 30 m. The turbines include a jacket-type substructure with four piles driven at an angle of approximately 13 deg to the vertical to pin the structure to the seabed. The acoustic field was measured during pile driving of two turbines in September 2015 with an 8-element towed horizontal line array. Measurements began at a range of 1 km from the turbine on which piling was occurring and extended to a range of 8 km from the construction. The peak-to-peak received level, sound exposure level, and kurtosis from each pile strike were determined as a function of range from the pile. The ambient noise just prior to each signal was also measured to calculate signal-to-noise ratio values. Results provide insight into the transition from fast-rise-time impulsive signals at close range to slow-rise-time non-impulsive signals at longer ranges. In addition, the variability among signals at the same range is being characterized as a function of pile and hammer strike characteristics. [Work supported by Bureau of Ocean Energy Management (BOEM).]
    Type of Medium: Online Resource
    ISSN: 0001-4966 , 1520-8524
    URL: Article
    DOI: 10.1121/1.4989147
    RVK:
    EQ 1000
    Language: English
    Publisher: Acoustical Society of America (ASA)
    Publication Date: 2017
    detail.hit.zdb_id: 1461063-2
    Location Call Number Limitation Availability
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    Online Resource
  • 5
    Online Resource
    Online Resource
    Analysis of underwater sounds from impact pile driving at the Block Island Wind Farm
    Acoustical Society of America (ASA) ; 2022
    In:  The Journal of the Acoustical Society of America Vol. 151, No. 4_Supplement ( 2022-04-01), p. A239-A240
    Details
    In: The Journal of the Acoustical Society of America, Acoustical Society of America (ASA), Vol. 151, No. 4_Supplement ( 2022-04-01), p. A239-A240
    Abstract: Impact pile driving creates intense, impulsive sound that radiates into the surrounding environment. Piles driven vertically into the seabed generate an azimuthally symmetric underwater sound field whereas piles driven on an angle will generate an azimuthally dependent sound field. Measurements were made during impact pile driving of raked piles to secure jacket foundation structures to the seabed at the Block Island Wind Farm at ranges between 500 m and 15 km. These measurements were analyzed to investigate variations in rise time, decay time, pulse duration, kurtosis, and sound received levels as a function of range and azimuth. Variations in the radiated sound field along opposing azimuths resulted in differences in measured sound exposure levels of up to 10 dB and greater due to the pile rake as the sound propagated in range. The raked pile configuration was modeled using an equivalent axisymmetric FEM model to describe the azimuthally dependent measured sound fields and compared to the measured data. These measurements made during wind farm construction will be presented and discussed. [Work supported by the Bureau of Ocean Energy Management.]
    Type of Medium: Online Resource
    ISSN: 0001-4966 , 1520-8524
    URL: Article
    DOI: 10.1121/10.0011188
    RVK:
    EQ 1000
    Language: English
    Publisher: Acoustical Society of America (ASA)
    Publication Date: 2022
    detail.hit.zdb_id: 1461063-2
    Location Call Number Limitation Availability
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    Online Resource
  • 6
    Online Resource
    Online Resource
    Characteristics of the soundscape before and after the construction of the Block Island Wind Farm
    Acoustical Society of America (ASA) ; 2018
    In:  The Journal of the Acoustical Society of America Vol. 144, No. 3_Supplement ( 2018-09-01), p. 1856-1856
    Details
    In: The Journal of the Acoustical Society of America, Acoustical Society of America (ASA), Vol. 144, No. 3_Supplement ( 2018-09-01), p. 1856-1856
    Abstract: The Block Island Wind Farm (BIWF) south of Rhode Island is the first offshore windfarm in the United States. As part of the Ocean Special Area Management Plan, acoustic data were collected before the construction in the fall of 2009. Noise budgets were estimated based on this data and showed the dominant sources of sound in a 1/3-octave band centered at 500 Hz were shipping and wind. Data were again collected during and after construction of the wind farm and will be presented and compared to pre-construction levels. In 2009, Passive Aquatic Listener (PALs) were deployed. After construction was complete, data from a tetrahedral hydrophone array (~50 m from one of the wind turbines) were analyzed to study the soundscape from December 20, 2016 to January 14, 2017. The acoustic environment near the BIWF after construction showed contributions from shipping, wind, and marine life. Noise from the wind turbine was measured near 70 Hz at approximately 100 dB re 1 mPa at a range of 50 m. Significant marine mammal vocalizations were recorded including from humpback and fin whales. (Work supported by the Bureau of Ocean Energy Management.)
    Type of Medium: Online Resource
    ISSN: 0001-4966 , 1520-8524
    URL: Article
    DOI: 10.1121/1.5068166
    RVK:
    EQ 1000
    Language: English
    Publisher: Acoustical Society of America (ASA)
    Publication Date: 2018
    detail.hit.zdb_id: 1461063-2
    Location Call Number Limitation Availability
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    Online Resource
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