Searched for: subject:"Seal"
(1 - 18 of 18)
document
Whyte, K.F. (author), Russell, D.J.F. (author), Sparling, C.E. (author), Binnerts, B. (author), Hastie, G.D. (author)
Understanding the potential effects of pile driving sounds on marine wildlife is essential for regulating offshore wind developments. Here, tracking data from 24 harbour seals were used to quantify effects and investigate sensitivity to the methods used to predict these. The Aquarius pile driving model was used to model source characteristics...
article 2020
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Deckers, J. (author), Munsterman, D.K. (author)
Based on the re-interpretation of well (log) data this study shows that the Våle Formation was deposited over large areas (> 100 km) in the southern central North Sea Basin (offshore Netherlands). Up to now, the Våle Formation (and the lateral equivalent Maureen Formation) were only described in the nearby offshore Denmark, Norway and UK. In the...
article 2019
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Verweij, J.M. (author), Nelskamp, S.N. (author), ten Veen, J.H. (author), de Bruin, G. (author), Geel, K. (author), Donders, T.H. (author)
Understanding the shallow gas system is critical for assessing its potential as an energy source, for evaluating the possible hazard of shallow gas for drilling and wind farm locations and for evaluating the effect of gas emissions at the seabed on marine ecosystems and climate. This paper presents the key elements and processes of the microbial...
article 2018
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Kastelein, R.A. (author), Helder-Hoek, L. (author), Gransier, R. (author), Terhune, J.M. (author), Jennings, N. (author), de Jong, C.A.F. (author)
Acoustic mitigation devices (AMDs) are used to deter marine mammals from construction sites to prevent hearing injury by offshore pile-driving noise. In order to quantify the distance at which AMDs designed as ‘seal scarers’ are detected by seals, the 50% hearing thresholds for playbacks of their sounds were determined. The broadband hearing...
article 2015
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Kastelein, R.A. (author), Hoek, L. (author), Gransier, R. (author), de Jong, C.A.F. (author), Terhune, J.M. (author), Jennings, N. (author)
Acoustic Mitigation Devices (AMDs) are used to deter marine mammals from construction sites, in order to prevent hearing injury by offshore pile driving noise. To estimate the distance at which two AMDs designed as ‘seal scarers’ (Ace Aquatec and Lofitech) are detected by harbor porpoises, the 50% hearing detection thresholds for playbacks of...
article 2015
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Terheege, J.H. (author), Wassing, B.B.T. (author), Orlic, B. (author), Giger, S.B. (author), Clennell, M.B. (author)
Prediction of hydrocarbon column heights in structural traps critically depends on proper analysis of the sealing capacity of faults. Entrainment of clay in fault zones in upper crustal levels may lead to the development of continuous clay smears that dramatically increase the sealing capacity of faults. In this study, direct shear experiments...
article 2013
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Thomsen, F. (author), Borsani, F. (author), Clarke, D. (author), de Jong, C.A.F. (author), de Witt, P. (author), Holtkamp, M. (author), Goethals, F. (author), San Martin, E. (author), Spadaro, P. (author), van Raalte, G. (author), Jensen, A. (author)
The World Organisation of Dredging Associations (WODA) has identified underwater sound as an environmental issue that needs further consideration. A WODA Expert Group on Underwater Sound (WEGUS) was established to provide a guidance paper on dredging sound, impact on aquatic biota and advice on underwater sound monitoring procedures. The paper...
conference paper 2013
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van de Wiel, H.J. (author), Vardøy, A.S.B. (author), Hayes, G. (author), Fischer, H.R. (author), Lapadatu, A. (author), Taklo, M.M.V. (author)
A flux-less copper-tin (Cu-Sn) solid-liquid inter-diffusion (SLID) bonding process, providing a cost-effective hermetic vacuum sealing at wafer-level, has been investigated. Observations have been made indicating that the storage time of Cu-Sn plated wafers before bonding is critical with regard to voiding. Growth of the intermediately formed...
conference paper 2012
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Orlic, B. (author), ter Heege, J.H. (author), Wassing, B. (author)
Induced stress changes due to CO2 injection into geological reservoirs can mechanically damage bounding fault- and top seals creating preferential pathways for CO2 migration from the containment or trigger existing faults causing seismic activity at storage sites. In this paper we present geomechanical simulations of the poro-mechanical effects,...
conference paper 2011
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Orlic, B. (author), ter Heege, J.H. (author), Wassing, B. (author)
The geomechanical effects of past hydrocarbon production and subsequent CO2 injection in depleted gas reservoirs were evaluated as a part of several recently accomplished feasibility studies of CO2 storage in the Netherlands. The objectives of geomechanical studies were to assess the mechanical integrity of a reservoir-seal system, i.e. the...
conference paper 2011
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Farrelly, I. (author), Loske, B. (author), Neele, F. (author), Holdstock, M. (author)
The largest single point CO2 emitter in Ireland, the Moneypoint Power Station (3.95 Mt CO2 per annum), is located in Co. Clare and geologically lies within the Clare Basin. In terms of the economics of transportation of CO2 from Moneypoint, a possible local storage site would be favoured. The study investigated a number of critical criteria with...
conference paper 2011
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Orlic, B. (author), TNO Bouw en Ondergrond (author)
Reservoir depletion and subsequent CO2 injection into the depleted geological reservoir induce stress changes that may mechanically damage top seal and wells, or trigger existing faults, creating the leakage pathways for CO2 escape from the reservoir. The role of geomechanics is to assess the mechanical impact of stress changes on seals, wells...
article 2009
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Wollenweber, J. (author), Alles, S.a. (author), Kronimus, A. (author), Busch, A. (author), Stanjek, H. (author), Krooss, B.M. (author), TNO Bouw en Ondergrond (author)
A comprehensive set of experimental and analytical methods has been used to characterise the sealing and fluid -transport properties of fine-grained (pelitic) sedimentary rocks under the pressure and temperature conditions of geological CO2 storage. The flow experiments were carried out on cylindrical sample plugs of 28.5 or 38 mm diameter and...
article 2009
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Orlic, B. (author), TNO Bouw en Ondergrond (author)
Reservoir depletion and subsequent CO 2 injection into the depleted geological reservoir induce stress changes that may mechanically damage top seal and wells, or trigger existing faults, creating the leakage pathways for CO 2 escape from the reservoir. The role of geomechanics is to assess the mechanical impact of stress changes on seals, wells...
conference paper 2008
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Yavuz, F.T. (author), van Tilburg, T. (author), Pagnier, H. (author), TNO Bouw en Ondergrond (author)
A novel scenario analysis framework has been created, called Carbon Sequestration Scenario Identification Framework (CASSIF). This framework addresses containment performance defined by the three major categories: well, fault and seal integrity. The relevant factors that influence the integrity are identified and expert opinion is a key value...
conference paper 2008
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Kastelein, R.A. (author), van der Heul, S. (author), Terhune, J.M. (author), Verboom, W.C. (author), Triesscheijn, R.J.V. (author), TNO Defensie en Veiligheid (author)
The marine aquaculture industry suffers losses due to pinniped attacks which damage net enclosures and fish stocks. Acoustic harassment devices (AHDs) emit loud sounds which are intended to deter pinnipeds from approaching aquaculture enclosures. At present, many AHDs emit sounds in the 8-20 kHz frequency range. It is not known whether sounds of...
article 2006
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Verboom, W.C. (author), Kastelein, R.A. (author), TNO Defensie en Veiligheid (author)
World-wide a concern exists about the influence of man-made noise on marine life and particularly on marine mammals and fish. One of the acoustic polluters of the world’s oceans is high-power active sonar, but also pile driving and seismic activities at sea are of concern with respect to animal welfare. At TNO, acoustic criteria are being...
conference paper 2005
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Kastelein, R.A. (author), van Schie, R. (author), Verboom, W.C. (author), de Haan, D. (author), TNO Defensie en Veiligheid (author)
The unmasked underwater hearing sensitivities of an 8-year-old male and a 7-year-old female Steller sea lion were measured in a pool, by using behavioral psychophysics. The animals were trained with positive reinforcement to respond when they detected an acoustic signal and not to respond when they did not. The signals were narrow-band,...
article 2005
Searched for: subject:"Seal"
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