What the picker changes

Top topics digest — the cards score the selected period against the prior 4 weeks.
12-week heatmap & outlet matrix — show the 12 weeks ending at the selected week (they slide back with the picker, they aren’t a fixed snapshot).
Per-topic volume / alias drift — same 12-week trailing window, anchored on the selected period.
Coverage gap quadrant — scores the selected period against the 12 weeks before it (not including it).
Anomaly cards — only show alerts the detector fired during the selected period. Quiet weeks legitimately show none.

What stays as-is

Outlet orientation strip / lean colours — context-only, drawn from the last 12 weeks of activity regardless.
Co-occurrence graph — recent-activity anchored, not picker-driven.
Source & topic profiles — all-time data for the topic; the picker doesn’t affect them.

Rolling 7 days is a sliding live window for “current vibes”; switch to Weekly to compare specific weeks side-by-side.

Weekly Rolling 7 days

live window

Press topic

Multi-Beam Surveying

1 articles · 1 aliases in press · first seen 7 Jun 2026

The Royal New Zealand Navy conducts a lakebed survey of Zealandia Lake to map underwater features, identify submerged hazards, and support safe navigation for the sanctuary's electric boat, while also providing valuable training in freshwater operations.

Coverage by outlet lean Methodology →

Stacked weekly counts; colour by editorial lean. Stuff and The Spinoff lean centre-left, NZ Herald centre-right, others centre.

Alias drift

How press outlets have named this topic, week by week.

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Recent headlines

Most recent 1 articles linking to this topic.

Navy enlisted in zealandia lake survey effort

RNZ

6 Aug

Sample framings

Up to 12 framings spread across outlets. Each framing is the LLM's one-line characterisation of the article's editorial angle — not a quote.

rnz Centre

portable system maps depths with precision

Navy enlisted in zealandia lake survey effort

6 Aug

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