Animal Impact Panels

Three tiles sit under Animal Impact in the rail (iPad / Mac) or dock (iPhone). One does the work today; one is reserved for a later release; one exports what the first produced.

Every control in the panel feeds one of three stages: it either picks which criteria apply, sets the source level being propagated, or chooses how sound spreads with range. The panel then inverts that geometry per hearing group to find the range at which the received level drops to each threshold.

These segmented pickers appear for every scenario, top to bottom, and decide which criteria and spreading law the table is built from.

With SOURCE set to Impulsive, MuirWave opens a built-in pile-driving source library so you don't have to hand-enter source levels. Three extra controls appear:

A caption under the pickers confirms the representative hammer, the unmitigated source levels (SL_peak and SEL_ss at 1 m) and the cumulative SEL₂₄ₕ offset, so you can sanity-check the state at a glance.

There is no published hammer library for vibratory piling, drilling, turbines or shipping, so with SOURCE set to Non-impulsive or Continuous the pile-driving block is replaced by two direct inputs you set yourself:

Below the controls the panel stacks up to four readouts. Which ones appear depends on your receptor, source type and compliance jurisdiction.

1. The impact-range table
   One row per hearing group — five for mammals (NMFS: LF / HF / VHF / PW / OW; Southall relabels the two pinniped rows PCW / OCW — codes expanded in the Glossary: LF baleen whales, HF dolphins, VHF porpoises, PW/OW seals & sea lions), four for fish + turtles. Four columns: HEARING GROUP, PEAK (impulsive only), SEL₂₄ₕ† (the dagger flags the accumulation assumption), and GOVERNING. The governing range — the larger of peak and SEL — is highlighted in cyan; that's the radius that matters for that group.
2. The summary headline
   A large cyan number: the largest mitigation zone across all groups (or the largest mortality / injury isopleth for fish), with the driving group named beneath. A checkmark badge means it's a trustworthy metric; a warning glyph appears only when a stationary screening SEL is driving the headline — a conservative upper bound, not a submission figure.
3. The soft-start ramp
   Mammals + impulsive only. A six-row table showing the largest governing range at every hammer-energy stop, with your current hammer highlighted — a visual aid for the JNCC-style ≥ 30-minute soft-start that escalates from low to operational energy. It recomputes on a background task, so the panel stays responsive.
4. The compliance footer & assumptions
   A footer shows the active jurisdiction (flag, short label and a one-line summary of its rule), and below it an ASSUMPTIONS block spells out every simplification — the single-coefficient TL model, the source-spectrum treatment, that soft-start isn't modelled (≈ −1 dB on SEL₂₄ₕ), and that beyond ≈ 3500 m an impulsive signature degrades to non-impulsive (Hastie et al. 2019) — plus the exact citation. Nothing is hidden from a reviewer.

The Export Methodology tile turns the panel's current selections into a self-contained methodology document — scenario inputs, propagation method, criteria and thresholds, and the per-group predicted ranges with full citations. Tap the tile, pick a format, confirm.

The second tile in the group opens a dedicated noise-abatement screening surface — and it's the only place mitigation lives. The Impact Ranges panel gives everyone the unmitigated baseline; this panel shows what a mitigation strategy actually does on top of it — per hearing group, across frequency, and with the operational measures a method statement relies on. It is an MuirWave Pro feature; a free user sees an upgrade panel with every impact-range number still visible on screen for free.

Five things stack up in the panel, all reading off the same scenario as Impact Ranges:

1. The system picker
   Six options — None / BBC / DBBC / HSD / IHC-NMS / BBC+HSD — each applied as a broadband reduction at the source: Big Bubble Curtain (−10 dB), Double BBC (−15 dB), Hydro-Sound Damper (−9 dB), IHC Noise Mitigation Screen (−17 dB), or a stacked BBC + HSD (−19 dB). It starts at None, so the panel opens on the same unmitigated baseline as Impact Ranges. The selected system's full name and broadband reduction show beneath; a combination (BBC+HSD) notes that its value is measured, not the sum of the single systems.
2. Frequency-dependent insertion loss
   A toggle switches the mitigation from a flat broadband number to a frequency-dependent insertion loss IL(f) — the curve below then shows where the abatement actually works. Bubble curtains and dampers are weak at the low-frequency piling peak and strongest across the mid-band, so spectral mitigation is more protective for high-frequency-hearing species (porpoises) than for low-frequency hearers (baleen whales) — a distinction a single number can't make. The amber shape under the curve is the pile's own source spectrum, so you can see the mismatch at a glance.
3. The mitigated-vs-unmitigated trade-off
   One row per hearing group, reading 3.5 km → 720 m ×4.9 — the unmitigated governing range struck through, the mitigated range in bold, and the reduction factor as a badge. When a system fully removes a group's injury zone the row reads cleared. This is the headline an EIA reviewer wants: what the strategy buys, per species.
4. Operational measures
   Two toggles credit measures that work by moving animals off before full power. Soft-start ramp (the JNCC ≥30-min escalation) is credited as a modest early-flee head-start for all groups. Acoustic deterrent (ADD) is credited a larger head-start — but for toothed whales only (dolphins, porpoises): seals habituate to deterrents (or are attracted to them), and ADD efficacy on baleen whales is poorly evidenced, so both are deliberately not credited. The panel says so in plain language.
5. The BSH 750 m compliance gate
   Under a BSH (Germany) compliance jurisdiction, for impulsive mammal scenarios, this panel carries the BSH dual-threshold gate: the predicted Peak SPL against the 190 dB limit and single-strike SEL₀₅ against the 160 dB limit at exactly 750 m (the BSH StUK4 dual criterion), with a per-metric headroom badge and an overall PASS / EXCEEDED verdict. It reads off the same scenario as Impact Ranges, so the two never disagree.