MarinkARS - Marine Explorer 
and Registry of Sound 
varına Juretzek, Ben Schmidt, Marıa Boethling 
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MarinEARS ;) 
Marine Explorer & Registry of Sound au 
BUNDESAMT FÜR 
SEESCHIFFFAHRT 
UND 
=HYDROGRAPHIE 
MariınkARS is the scientific platform of the German 
-ederal Maritime and Hydrographic Agency (BSH) 
egarding underwater noise effects for conduct- 
ng Environmental Impact Assessments (EIA) in the 
ramework of approval procedures for offshore wind 
arms as well as for the estimation of cumulative Iim- 
jacts in Strategic Environmental Assessment (SEA) 
or Maritime Spatial Planning and the Site Develop- 
nent Plan for Offshore Wind Energy. 
VarinEARS contains extensive data sets from meas- 
ırements of underwater sound within the scope 
of planning and licensing approval procedures of 
OWF’s, from research projects and the conceptual 
lesign of the national monitoring programm. 
Background Information 
3SH Is the authority responsible for the approval of offshore wind energy projects in the German Exclu 
3ive Economic Zone (EEZ), for monitoring and assessment of underwater noise effects on the marine 
anvironment and for the implementation and operation of the national noise registry, covering the Germar 
yaters In the North Sea and Baltic Sea 
3SH requirements for offshore construction projects regarding noise 
amissions 
» reference of foundation methods wıth low noise emiIssions 
» ”rediction of noise emissions due to pile driving 
» Threshold for pile driving noise: 160 dB re 1uPa2s (SEL95) at 750 m source distance 
» Limitation of piling duration (180 min for monopiles, 140 min for Jacket piles) 
» Application of deterrence for marine mammals prior to piling to prevent physical injury 
MarinkARS role in managing 
allıng noise Impacts 
e Fast, dally access for the construction supervision 
f offshore projects 
» Quality control of data and evaluations 
» Assessment of the efficiency of measures based 
on measurements 
» Basis for normalization and standardization 
Lessons learnt 
Ihe noise generated by pile-driving can be significantly reduced by technical noise abatement systems. 
_evel reductions (insertion loss) of up to 24 dB can be achieved compared to unmitigated pile-driving 
Inder the premise that technical sound mitigation concepts are applied successfully. 
Technical innovation and noise abatement system developments by the Industry lead to a rellable com: 
allance with threshold since 2014, despite Increasing pille diameters and water depths of project sites. 
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The noise registry Is publiclhy accessible. There is also a public portal con- 
(aining general Information on pile driving activities in wind farms in the 
Exclusive Economic Zone. 
Ailter parameters of the sound register include pile-driving times, noise 
abatement systems used and the noise data. Selected data is free to down- 
load. 
| 
An important product Is the annual reporting of Impulsive sound events to 
he european nolse registry at ICE>S to fulfill the requirements of the Marine 
Strategy Framework Directive (MSFD). 
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Time sequence of a pile-driving event (monopile): 
The ramming duration is about 140 min 
Single event level (SEL) and peak level (LPeak) for different piles 
9f a wind farm: The threshold values at activity level were met 
Bottom left: ?ercentiles of a pile driving in frequency bands up to 10 kHz 
Bottom right: Hammer energy for the piles of a wind farm: 
The ramming energy was Individually adapted to the ground con- 
ditions in order to minimIze the nolse emissions. 
Top left: 
1] ICES/CIEM https://underwaternoise.ices.dk/impulsive/map.aspx 
2] UBA, 2011. Empfehlung von Lärmschutzwerten bei der Errichtung von Offshore Windparks 
3] BSH, 2011. Offshore-Windparks Messvorschrift für Unterwasserschallmessungen 
4] BSH, 2013. Offshore-Windparks Messvorschrift für die quantitative Bestimmung der Wirksamkeit von Schalldimmmaßnahmer 
5] BMU, 2013. Schallschutzkonzept 
Sontact: marinears@bsh.de 
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