Arctic Research Dashboard

Ice shelf sonar monitoring · Satellite fusion · Integrity tracking — Jun 2026

Thwaites Critical

Last sync: 05:01 UTC

Thwaites

West Antarctica

Critical

Integrity

31.4

Loss rate

87.2 km³/yr

Area

192,000 km²

Calving events

3

Unstable grounding line — accelerating retreat

-4.1 pts/mo

Pine Island

West Antarctica

Warning

Integrity

44.8

Loss rate

58.4 km³/yr

Area

160,000 km²

Calving events

2

Basal melt elevated — cavity expansion detected

-2.3 pts/mo

Larsen C

Antarctic Peninsula

Monitor

Integrity

62.1

Loss rate

29.7 km³/yr

Area

50,000 km²

Calving events

1

Stable but thinning — rifts widening slowly

-0.8 pts/mo

Ronne

West Antarctica

Stable

Integrity

77.3

Loss rate

12.1 km³/yr

Area

422,000 km²

Calving events

0

Within normal seasonal variation

+0.2 pts/mo

Ross

East Antarctica

Stable

Integrity

84.6

Loss rate

8.3 km³/yr

Area

510,680 km²

Calving events

0

Largest shelf — nominal integrity maintained

-0.1 pts/mo

Shelf Integrity Trend — 12 Months

Integrity index 0–100 per shelf region

Thwaites

Pine Island

Larsen C

Ronne

Ross

Ice Loss Rate Trend — 12 Months

km³/year — combined shelf loss rate

Calving Event Log

Sonar + satellite confirmed ice detachment events

Event ID	Region	Date	Mass (km³)	Area (km²)	Integrity Δ	Trigger	Sources	Status
calv-0041	Thwaites	2026-06-14	12.4	840	34.2 → 31.4	Basal melt cavity collapse	SATSON	Confirmed
calv-0040	Thwaites	2026-06-08	8.1	560	35.8 → 34.2	Rift propagation — NW sector	SATSON	Confirmed
calv-0039	Pine Island	2026-06-11	6.3	420	47.2 → 44.8	Warm CDW intrusion	SAT	Confirmed
calv-0038	Thwaites	2026-06-17	4.2	290	31.4 → 29.8	Grounding line retreat predicted	SON	Predicted
calv-0037	Pine Island	2026-05-29	3.8	255	48.9 → 47.2	Tidal flexure fatigue	SATSON	Confirmed
calv-0036	Larsen C	2026-05-18	2.1	140	63.4 → 62.1	Surface meltwater ponding	SAT	Confirmed
calv-0035	Thwaites	2026-06-14	18.7	1,240	36.4 → 32.1	Monitoring — rift widening 2.4m/day	SATSON	Monitoring
calv-0034	Larsen C	2026-04-22	1.4	95	63.8 → 63.4	Ice tongue shear	SAT	Historical
calv-0033	Pine Island	2026-04-07	5.2	350	50.1 → 48.9	Subglacial discharge pulse	SATSON	Historical
calv-0032	Thwaites	2026-03-15	9.6	640	38.7 → 36.4	Bed topography step — Retrograde slope	SATSON	Historical

Showing 10 of 10 events

Bathymetric Anomalies

5 active

Subglacial Cavity

critical

Thwaites W · 890m · 14.2 km²

2026-05-22

Warm Water Intrusion

warning

Pine Island · 400m · size TBD

2026-06-01

Rift Propagation

critical

Thwaites E · Surface · 2.4m/day

2026-06-10

Meltwater Pond

monitoring

Larsen C · Surface · 3.1 km²

2026-05-14

Basal Melt Channel

warning

Pine Island · 320m · 8.7 km

2026-04-28

Data Fusion Status

4/5 Nominal

Hydrophone Array

D🌊

24 sensors · 0.05–50 kHz

05:03:38

Nominal

Satellite Imagery

📡

Sentinel-1 · ICESat-2 · GRACE-FO

04:47:12

Nominal

AUV Sonar Returns

D🌊

3 AUVs on-shelf · 12 kHz

05:02:55

Nominal

ASP Ethics Engine

🔉

Sonar power compliance

05:03:40

Nominal

Ice Sheet Model

🔉

BISICLES · PISM fusion

04:58:00

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