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PAM-ZPassive Acoustic Monitoring · Pulau Pari
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Dashboard

Soundscape Dashboard

What the Pulau Pari lagoon sounds like right now: an ecosystem health score, who is making the noise (sea, boats or marine life), the latest hydrophone recordings and underwater camera images.

Last sync: 2026-10-27 02:10:41

Guardians of the Pulau Pari Lagoon

Pulau Pari is a small coral island in the Seribu Islands archipelago, located just 45 km north of Jakarta Bay. Its shallow-water lagoon hosts one of Indonesia's most ecologically significant marine ecosystems — yet it sits in a critically vulnerable position between a megacity and the open Java Sea.

The lagoon supports thriving seagrass meadows, coral reef gardens, and mangrove fringes that act as nurseries for hundreds of marine species. These ecosystems are also the livelihood of local fishing communities who have depended on these waters for generations.

As shipping traffic, urban runoff, and climate pressures intensify, the underwater soundscape of the lagoon reveals critical early-warning signals invisible to the human eye. PAM-Z listens continuously — 24 hours a day — so scientists can detect ecosystem stress before it becomes irreversible.

~45 km
from Jakarta Bay
24/7
Acoustic monitoring
3 Indices
Soundscape health
IEEE OES
Ocean Decade 2026
🐠

Why does sound matter?

A healthy reef sounds like a crackling fire — rich with snapping shrimp, fish calls, and biological activity. A degraded one falls silent. By analyzing the acoustic fingerprint of the lagoon, PAM-Z can measure biodiversity, detect anthropogenic disturbance, and track ecosystem recovery — all without disturbing the marine life.

🐟 Fish Calls 🦐 Snapping Shrimp 🌊 Wave Energy ⚓ Boat Noise 🐬 Cetacean 🦈 Marine Traffic
🖼️ Dokumentasi Lapangan

Foto dan video kegiatan tim di Pulau Pari. Klik untuk melihat lebih besar.

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🔬 Why Passive Acoustic Monitoring?
📡

Non-Invasive Intelligence

Hydrophone arrays listen to the ocean without disturbing habitats. No netting, no chemical sampling — pure acoustic data captured at millisecond resolution.

🕐

Continuous 24/7 Coverage

Biological events like spawning aggregations, night feeding, and stress responses happen at all hours. PAM-Z captures the full diel cycle automatically.

📊

Multi-Index Ecosystem Health

Six validated acoustic indices (ACI, ADI, BI, NDSI, Entropy, AEI) are synthesized into a single Soundscape Health Index, updated in near real-time.

🌏

Open Science for Indonesia

Data feeds directly into the UN Ocean Decade framework, contributing to global marine biodiversity baselines and supporting local conservation policy decisions.

🤖

AI-Ready Architecture

Raw recordings and derived indices are stored for machine learning analysis — enabling future automated species identification and anomaly detection.

🗺️ Device Location Map · ESRI Satellite Imagery

📍 Click markers to see device details · 🛰️ © Esri, Maxar, Earthstar Geographics

🔧 PAM-Z Hydrophone System
PAM-Z System Illustration

Real-time Data Transmission · Surface Buoy · Sinker · Broadband Hydrophone · Anchor System

🌦️ Environmental Snapshot · Wind & Tide

🌬️ Wind

3.1 m/s
Direction: 111°  ·  2026-10-27 02:12
24h avg: 4.5 m/s  ·  Max gust: 9.3 m/s

🌊 Tide Level

0.82 m
Raw dist: 518.0 cm  ·  2026-10-27 02:12
24h avg: 0.99m  ·  Max: 1.37m  ·  Min: 0.74m
🌊 Full Wind & Tide dashboard →📸 Full media gallery →
📡 Select Monitoring Device

Click a device to filter all charts and data to that hydrophone unit.

🌊 ALL DEVICES📡 Live
📊 16,410 records
Aggregated · all hydrophones
🖥️ rpi_bdb5300a🟢 Active
📈 16,410 records📍 Stasiun 2 (Karamba Kongsi)
🕒 2026-10-27 02:10
🖥️ rpi_c2b6d60d🟢 Active
📈 10,538 records📍 Stasiun 3 (Goba Besar)
🕒 2026-10-27 02:10
🖥️ rpi_f71bc593🟢 Active
📈 24,958 records📍 Stasiun 1 (Mulut Goba)
🕒 2026-10-27 02:09
SOUNDSCAPE HEALTH INDEX
42.21
/ 100
🟠 Poor
65%🌊 Oceanophony
34%🏭 Anthrophony
1%🐬 Biophony
-30.3 dB📊 RMS Level
0.961🌀 AEI
-0.931📊 NDI avg
39.9%🔇 Masking
🎚️ Soundscape Breakdown · Recent 2,000 Samples
🌊 Key Acoustic Sources · Waves, Wind, Ships & Snapping Shrimp (Recent 2,000 Samples)
🧠 Automatic Acoustic Interpretation
The percentages above are estimated from underwater sound analysis using machine learning classification of audio segments. Waves & wind typically dominate low-frequency bands (<1 kHz), while ships produce persistent low-frequency engine noise. Snapping shrimp produce high-frequency broadband clicks (2–20 kHz) and are indicators of healthy coral reef ecosystems.

⚠️ Note: These are acoustically-derived proxies, not direct sensor measurements. For ground truth:
  • 🌊 Compare wave & wind trends with our weather station.
  • 📹 Cross-reference ship noise with CCTV cameras at Marine Living Lab, Pulau Kongsi.
  • 🦐 Validate snapping shrimp activity with underwater camera footage synchronized with hydrophone deployment.
Interpretation: 🦐 Low snapping shrimp activity – possible reef degradation or masking by other sources. ⚓ Noticeable ship traffic (6.2%). 🌊 High wave energy (54.9%) – rough sea conditions dominate soundscape. Wind contribution: 11.7%. Review trends above to assess diurnal patterns and potential correlation with tidal phase or human activity.
🎙️ Latest Audio Recordings

Each recording shows a waveform (amplitude over time) and a spectrogram (frequency content over time). The spectrogram is initially hidden and reveals itself from left to right as you play the audio, exactly following the waveform cursor.

Recordings are for signed-in users

Listening to the hydrophone recordings and their spectrograms requires an account. Researchers who would like access can request data from the PAM-Z team.

🔑 Sign in 📬 Request data
📊 Bioacoustic Indices · Normalized
📈 SHI Trend · Last 7 Days
📉 NDI Trend · Biophony vs Anthrophony Balance
🔍 Positive NDI → Biophony dominates (healthy ecosystem sounds). Negative NDI → Anthrophony dominates (noise pollution masking marine life). Values near zero indicate balance.
⏱️ Time-Based Analysis · Hourly Pattern

Average soundscape composition per hour of day (±1 SD error bars). Dawn and dusk hours typically show the richest bioacoustic activity in the Pulau Pari lagoon.

☀️ Day vs. Night Comparison

🌞 Day (06:00–17:59)

🌊 73.8%
🏭 25.2%
🐬 1%
From 1002 samples

🌙 Night (18:00–05:59)

🌊 55.2%
🏭 42.8%
🐬 1.9%
From 998 samples

⏲️ 6-Hour Interval Breakdown

🌅 Dawn
00:00–05:59

🌊 55.1%
🏭 43%
🐬 1.9%
NDI: -0.917
Masking: 52.9% · Samples: 495

☀️ Day
06:00–11:59

🌊 78.2%
🏭 21.1%
🐬 0.8%
NDI: -0.953
Masking: 21.8% · Samples: 499

🌇 Dusk
12:00–17:59

🌊 69.5%
🏭 29.4%
🐬 1.2%
NDI: -0.936
Masking: 32.2% · Samples: 503

🌙 Night
18:00–23:59

🌊 55.4%
🏭 42.7%
🐬 1.9%
NDI: -0.917
Masking: 52.5% · Samples: 503
💡 Biophony peaks at Dawn and Night, when marine organisms are most active. Anthrophony typically rises during Day as vessel traffic increases near the Jakarta shipping corridor.
📋 High Res Acoustic Data Log · Page 819 of 821
🔍DeviceTimestampSHINDIMaskedACIADIBINDSIEntropyAEI🌊%🏭%🐬%
rpi_bdb5300a 2026-04-23 16:46:27 42.97
Poor		 -0.847 ✓ Clear 0.8759 0.4192 0.000017 0.1258 0.4993 0.9555 71.7% 26.2% 2.2%
rpi_bdb5300a 2026-04-23 16:44:27 45.33
Poor		 -0.831 ✓ Clear 0.9017 0.4408 0.000034 0.2941 0.4694 0.9576 76.6% 21.5% 2%
rpi_bdb5300a 2026-04-23 16:43:27 47.76
Poor		 -0.816 ✓ Clear 0.8788 0.6200 0.000032 0.3181 0.5135 0.9300 64.9% 31.8% 3.2%
rpi_bdb5300a 2026-04-23 16:42:27 52.95
Fair		 -0.811 ⚠️ Masked 0.8831 0.9798 0.000033 0.3844 0.5825 0.8489 33.5% 60.2% 6.3%
rpi_bdb5300a 2026-04-23 16:41:27 52.85
Fair		 -0.812 ⚠️ Masked 0.8802 0.9748 0.000033 0.3820 0.5794 0.8480 34.2% 59.6% 6.2%
rpi_bdb5300a 2026-04-23 16:40:27 50.89
Fair		 -0.832 ⚠️ Masked 0.9040 0.8105 0.000041 0.3379 0.6184 0.8938 46.3% 49.2% 4.5%
rpi_bdb5300a 2026-04-23 16:39:27 51.99
Fair		 -0.825 ⚠️ Masked 0.9243 0.8737 0.000049 0.3560 0.6356 0.8761 40.1% 54.7% 5.2%
rpi_bdb5300a 2026-04-23 16:37:38 46.1
Poor		 -0.829 ✓ Clear 0.9164 0.5043 0.000041 0.2773 0.5140 0.9479 70.1% 27.4% 2.6%
rpi_bdb5300a 2026-04-23 16:35:38 44.83
Poor		 -0.858 ✓ Clear 0.8884 0.4844 0.000053 0.1950 0.5351 0.9575 69.3% 28.5% 2.2%
rpi_bdb5300a 2026-04-23 16:34:38 45.88
Poor		 -0.809 ✓ Clear 0.8918 0.4702 0.000035 0.3081 0.4796 0.9568 74.6% 22.9% 2.4%
rpi_bdb5300a 2026-04-23 16:33:38 51.94
Fair		 -0.8 ⚠️ Masked 0.8719 0.8849 0.000035 0.3936 0.5697 0.8800 43.4% 50.9% 5.7%
rpi_bdb5300a 2026-04-23 16:32:38 52.09
Fair		 -0.822 ⚠️ Masked 0.8612 0.9064 0.000041 0.3607 0.6180 0.8794 38.3% 56.2% 5.5%
rpi_bdb5300a 2026-04-23 11:04:57 53.42
Fair		 -0.805 ⚠️ Masked 0.8768 0.9759 0.000036 0.4160 0.5960 0.8601 32.6% 60.9% 6.6%
rpi_bdb5300a 2026-04-23 11:03:57 53.64
Fair		 -0.807 ⚠️ Masked 0.8903 0.9636 0.000040 0.4296 0.6132 0.8666 33.2% 60.4% 6.5%
rpi_bdb5300a 2026-04-23 11:02:57 51.22
Fair		 -0.827 ⚠️ Masked 0.9109 0.8188 0.000045 0.3407 0.6352 0.8882 44.9% 50.3% 4.8%
rpi_bdb5300a 2026-04-23 10:28:57 44.06
Poor		 -0.824 ✓ Clear 0.9054 0.4259 0.000028 0.2183 0.4670 0.9580 76.8% 21.2% 2%
rpi_bdb5300a 2026-04-23 10:27:57 49.22
Poor		 -0.823 ✓ Clear 0.8815 0.6732 0.000033 0.3629 0.5470 0.9241 62% 34.7% 3.4%
rpi_bdb5300a 2026-04-23 10:26:57 53.76
Fair		 -0.813 ⚠️ Masked 0.8732 0.9701 0.000040 0.4446 0.6024 0.8705 33.5% 60.3% 6.2%
rpi_bdb5300a 2026-04-23 10:25:57 53.8
Fair		 -0.818 ⚠️ Masked 0.8750 0.9969 0.000036 0.4238 0.5984 0.8518 31% 62.7% 6.3%
rpi_bdb5300a 2026-04-23 10:24:57 54.37
Fair		 -0.808 ⚠️ Masked 0.8930 0.9895 0.000044 0.4459 0.6350 0.8593 30.8% 62.6% 6.6%