Lampiran 1 Kapal nelayan yang digunakan untuk pengambilan data akustik pada sistem single beam. Lampiran 2 Konfigurasi instrumen single beam di kapal

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1 LAMPIRAN 97

2 98 Lampiran 1 Kapal nelayan yang digunakan untuk pengambilan data akustik pada sistem single beam Lampiran 2 Konfigurasi instrumen single beam di kapal

3 99 Lampiran 3 Alat pengukur parameter fisik sedimen di Laboratorium Fisika Tanah Balai Penelitian Tanah, Bogor Shaker (ASTM E-11, USA standart) Oven pengering Timbangan Alat pengukur densitas sedimen Alat pengukur porositas

4 100 Lampiran 4 Foto tipe substrat dasar perairan di lokasi penelitian Kepulauan Seribu Substrat pasir Substrat pasir berlanau Substrat pasir berliat

5 101 Lampiran 5 Listing program Matlab untuk menampilkan echogram, acoustic backscattering strength, dan echo level %% PROGRAM MATLAB %% % PENGOLAHAN DATA AKUSTIK CRUZPRO FISHFINDER % % FPIK ITK IPB 2012 % %% Rumusan Dasar %% % EL=SL-2TL+TS+2DI % EL= SL-2*(20LOG10(RR)-2(alp)(RR))+TS+2DI % SL=10*log10(p) % p=((rho*c*pa*sig*di)/4*phi)) % Pe=v^2/R % k = 2*phi*F/C % V = phi*(r^2)*t %% Memasukan variabel %% % a= 0.045; % Pa = 53.9; %v = 12; %R = v/15; % hambatan %r = 0.5; %t = 1; %phi=3.14; %Sound Speed formula% % C= T-0.04T^2 %% Memasukan variabel %% C=1546.8; F=200000; a=0.045; phi=3.14; ld= C/F; t=0.004; r=r; %rho=1000; %Vreff=6.5043e-004; % beamwidth % Kec. Suara dlm air laut Formula Medwin % Frekwensi Transducer Cruzpro 200 khz % Diameter Lingkaran Transducer % Lamda, panjang gelombang suara % Tau (Pulse Length) % Jarak target dari permukaan transducer pada tiap sta.(m) beamwidth=20*log10(ld/2*phi*a)+7.7;%urick,1983 hal.243 %% Perhitungan Variabel %% %k =2*phi*F/C ; %DI=(k*a)^2; %Pe=v^2/R; %Sig=(Pa/Pe)*0.01; %p=(((rho*c*pa*sig*di)/4*phi)^0.5); %% Perhitungan Variabel Akustik %% %Kecepatan suara medwin %% Parameter Instrumen %% % % AG0=-53.78; % amplifier gain RS=-185; % Receiving sensitivity 200 khz

6 102 SL=163; % Source Level 200 khz RS2=-173; % Receiving sensitivity 50 khz %AGTR=10^(AG0/10); %RSTR=10^(RS/10); %KTRlin=AGTR*RSTR; %KTR=20*log10(KTRlin); alpha= ; % koef absorpsi untuk 200 khz [Formula Schulkin dan Marsh, Urick hal.105] TL=20*log10(r)+alpha*r; % count=12; % contoh count makscount=255; % 8 bit % VR=20*log10((count)/makscount)); jumrec=1; % jumlah receiver AVG=20*log10(jumrec); % array voltage gain %% Perhitungan Parameter Akustik %% %% load data melalui workspace %% %% Surface Backscattering Strength (SS) %% xx=sbst10x28i i0x290x2810x2e780x29; %% inisialisasi data ke variabel aa=xx(1:size(xx,1),18:size(xx,2)); aaa=rot90(aa); VR=20*(log10((aaa)/makscount)); SS=-RS-SL+2*TL+VR-AVG+AG0; %% Reverberation Level RL (Urick 1983) %% RL=SL-2*TL+SS+10*log10(beamwidth)+10*log10(C*t/2)+10*log10(r); %% Volume Backscattering Strength (SV) %% % SV=10*log10(dens)+TS %SV=RL-SL+2*TL-10*log10(beamwidth)-10*log10(C*t/2)-10*log10(r^2); %% SV,Furusawa %% %SV=VR+20*log10(r)+2*r*(alpha/1000)-65-10*log10(C*t/2)+19.1; SV=RL-SL+2*TL-10*log10(beamwidth)-10*log10(C*t/2)-10*log10(r^2); %% Rata-rata Surface Backscattering Strength (SSr)%% NN=size(aa,2); NNN=NN-11; ff=aa(:,1:nnn); hh=mean(ff); VR1=20*(log10((hh)/makscount)); SSr=-RS-SL+2*TL+VR1-AVG+AG0; %% Rata-rata RL %% RLr=SL-2*TL+SSr+10*log10(beamwidth)+10*log10(C*t/2)+10*log10(r); %% Rata-rata Volume Backscattering Strength (SVr) %%

7 103 % SVr=RLr-SL+2*TL-10*log10(beamwidth)-10*log10(C*t/2)- 10*log10(r^2); SVr=SSr-10*log10(C*tau/2) %% Echo Level %% EL=SL-2*TL+SS; ELr=SL-2*TL+SSr; %EL=SL-30*log10(r)-2*alpha*r+10*log10(phi*C*t)+SS; %% Rata rata Echo Level (ELr) %% %ELr=SL-30*log10(r)-2*alpha*r+10*log10(phi*C*t)+SSr; %% Matrik Kedalaman %% lamda=3*(c/f); range=([1:size(aaa,1)]); N=length(range); dpt=(0:lamda:length(aaa))'; Y=dpt(1:N); YX=Y+1; YY=sort(YX,1,'descend'); X=[1:1:length(aaa)]; XX=[1:1:length(ff)]; N1=length(hh); dpt1=(0:lamda:length(hh))'; Y1=dpt1(1:N1); YX1=Y1+1; YY1=sort(YX1,1,'ascend'); X1=[1:1:length(hh)]; time=x(1:1:length(hh)); %% Figure 1 %% figure('name','time Series of Surface Scattering Strength','NumberTitle','on') imagesc(x,yy,ss); colorbar('location','eastoutside') Title ('Grafik Time Series of Surface Backscattering Strength ( SS(dB) ) Stasion 1 ') ylabel('depth (m)') xlabel('time (s)') %% Figure 2 %% figure('name','time Series of Volume Scattering Strength','NumberTitle','on') imagesc(x,yy,sv); colorbar('location','eastoutside') Title ('Grafik Time Series of Volume Backscattering Strength ( SV(dB)) Stasion 1 ') ylabel('depth (m)') xlabel('time (s)')

8 104 %% figure 3 %% figure('name','intensitas Acoustic Backscattering Strength Vs Depth') plot(yy1,ssr,'-r',yy1,svr,'-') h = legend('ssr','svr',2); set(h,'interpreter','none') Title ('Substrat Sta 1') ylabel('intensitas Acoustic Backscattering Strength (db)') xlabel('depth (m)') grid on %% figure 4 %% figure('name','echo Level(dB)Vs Time') plot(time,elr,'-') Title ('Substrat Sta1') ylabel('echo Level(dB)') xlabel('time (s)') grid on %% %%

9 105 Lampiran 6 Tampilan echogram volume backscattering strength (lanjutan) Stasiun 1 Stasiun 2 Stasiun 8 Stasiun 9

10 106 Lampiran 7 Tampilan echogram surface backscattering strength (lanjutan) Stasiun 1 Stasiun 2 Stasiun 8 Stasiun 9

11 107 Lampiran 8 Tampilan grafik echo level (lanjutan) Echo Level(dB) Time (s) Stasiun Echo Level(dB) Time (s) Stasiun Echo Level(dB) Time (s) Stasiun Echo Level(dB) Time (s) Stasiun 4

12 108 Lampiran 8 (lanjutan) Echo Level(dB) Time (s) Stasiun Echo Level(dB) Time (s) Stasiun Echo Level(dB) Time (s) Stasiun 7

13 109 Lampiran 9 Tampilan pola SV dan SS pada stasiun pengamatan (lanjutan) -15 SSr SVr -20 Acoustic Backscattering Strength (db) Depth (m) -15 Stasiun 1 SSr SVr -20 Acoustic Backscattering Strength (db) Depth (m) Stasiun 2 SSr SVr Acoustic Backscattering Strength (db) Depth (m) Stasiun 8 SSr SVr Acoustic Backscattering Strength (db) Depth (m) Stasiun 9

14 110 Lampiran 10 Cluster data parameter sedimen Cluster Analysis of Observations: Pasir; Lumpur; Liat; Densitas; Porositas; Pearson Distance, Average Linkage Amalgamation Steps Number Number of obs. of Similarity Distance Clusters New in new Step clusters level level joined cluster cluster ,7826 0, ,4424 0, ,6024 1, ,3915 1, ,9884 2, ,7363 3, ,1782 3, ,5936 5, Final Partition Number of clusters: 1 Within Average Maximum cluster distance distance Number of sum of from from observations squares centroid centroid Cluster ,98 13, ,6198 Lampiran 11 Cluster data parameter akustik Cluster Analysis of Observations: SV; SS; EL Manhattan Distance, Average Linkage Amalgamation Steps Number Number of obs. of Similarity Distance Clusters New in new Step clusters level level joined cluster cluster Final Partition Number of clusters: 1 Within Average Maximum cluster distance distance Number of sum of from from observations squares centroid centroid Cluster

15 Lampiran 12 Hasil analisis contoh fisika tanah 111

16 Lampiran 12 Lanjutan 112

17 113 Lampiran 13 Profil KR Baruna Jaya IV Sumber : BPPT 2010 Spesifikasi Nama Nama panggilan Tahun pembuatan Galangan pembuatan Pemilik Mesin utama Dimensi kapal Draft kapal Berat Kecepatan Jangkauan Kapasitas bahan bakar Air tawar Peralatan penelitian Keterangan Baruna Jaya IV P L I Q 1995 CMN Cherbourg France BPPT 2 x 1100 PS Niigata Pielstick 5 PA5L 60.4 x 12.1 x 4.5 m 4.15 m 1219 T knots 7500 nm liter liter Baruna Jaya IV didesain utama untuk survei perikanan dan oseanografi, dilengkapi dengan peralatan : Fish Finder, Squid Jigger, Bottom and Midwater Trawl Longline, Gill Net Fish Processing, ADCP RDI Broadband 350 khz, CTD Seabird SBE-911, Water Sampler, Current Meter, Sediment Sampler. Peralatan survei multi beam : Elac Seabeam 1050D MBES.

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