https://w3id.org/sciencelive/np/RA1SwyraUv8RzgZFXlgYSlTapQp0Xp3DPW_XpeMwSEBFo/Head https://w3id.org/sciencelive/np/RA1SwyraUv8RzgZFXlgYSlTapQp0Xp3DPW_XpeMwSEBFo http://www.nanopub.org/nschema#hasAssertion https://w3id.org/sciencelive/np/RA1SwyraUv8RzgZFXlgYSlTapQp0Xp3DPW_XpeMwSEBFo/assertion https://w3id.org/sciencelive/np/RA1SwyraUv8RzgZFXlgYSlTapQp0Xp3DPW_XpeMwSEBFo http://www.nanopub.org/nschema#hasProvenance https://w3id.org/sciencelive/np/RA1SwyraUv8RzgZFXlgYSlTapQp0Xp3DPW_XpeMwSEBFo/provenance https://w3id.org/sciencelive/np/RA1SwyraUv8RzgZFXlgYSlTapQp0Xp3DPW_XpeMwSEBFo http://www.nanopub.org/nschema#hasPublicationInfo https://w3id.org/sciencelive/np/RA1SwyraUv8RzgZFXlgYSlTapQp0Xp3DPW_XpeMwSEBFo/pubinfo https://w3id.org/sciencelive/np/RA1SwyraUv8RzgZFXlgYSlTapQp0Xp3DPW_XpeMwSEBFo http://www.w3.org/1999/02/22-rdf-syntax-ns#type http://www.nanopub.org/nschema#Nanopublication https://w3id.org/sciencelive/np/RA1SwyraUv8RzgZFXlgYSlTapQp0Xp3DPW_XpeMwSEBFo/assertion https://w3id.org/np/RA5e5XeXy_-aNK5giB7kBAEQslTLVydHeM4YYEzhmEE2w/comparatorGroup http://purl.org/dc/terms/description The glacier-speed history alone, and the glacier-speed history together with weather and melt observations, without observations of the ice–bed boundary. https://w3id.org/np/RA5e5XeXy_-aNK5giB7kBAEQslTLVydHeM4YYEzhmEE2w/interventionGroup http://purl.org/dc/terms/description Observations of the ice–bed boundary — basal water pressure and bed uplift — used together with weather and melt observations and the glacier-speed history. https://w3id.org/np/RA5e5XeXy_-aNK5giB7kBAEQslTLVydHeM4YYEzhmEE2w/outcomeGroup http://purl.org/dc/terms/description Glacier acceleration: skill in predicting acceleration on events not used to build the prediction, and the lead time between the onset of change at the ice–bed boundary and the onset of acceleration. https://w3id.org/np/RA5e5XeXy_-aNK5giB7kBAEQslTLVydHeM4YYEzhmEE2w/population http://purl.org/dc/terms/description Grounded outlet glaciers, at the contact between grounded ice and its bed, during acceleration events driven by surface meltwater or rain reaching the bed. https://w3id.org/sciencelive/np/RA1SwyraUv8RzgZFXlgYSlTapQp0Xp3DPW_XpeMwSEBFo/basal-signals-lead-glacier-acceleration http://data.cochrane.org/ontologies/pico/comparatorGroup https://w3id.org/np/RA5e5XeXy_-aNK5giB7kBAEQslTLVydHeM4YYEzhmEE2w/comparatorGroup https://w3id.org/sciencelive/np/RA1SwyraUv8RzgZFXlgYSlTapQp0Xp3DPW_XpeMwSEBFo/basal-signals-lead-glacier-acceleration http://data.cochrane.org/ontologies/pico/interventionGroup https://w3id.org/np/RA5e5XeXy_-aNK5giB7kBAEQslTLVydHeM4YYEzhmEE2w/interventionGroup https://w3id.org/sciencelive/np/RA1SwyraUv8RzgZFXlgYSlTapQp0Xp3DPW_XpeMwSEBFo/basal-signals-lead-glacier-acceleration http://data.cochrane.org/ontologies/pico/outcomeGroup https://w3id.org/np/RA5e5XeXy_-aNK5giB7kBAEQslTLVydHeM4YYEzhmEE2w/outcomeGroup https://w3id.org/sciencelive/np/RA1SwyraUv8RzgZFXlgYSlTapQp0Xp3DPW_XpeMwSEBFo/basal-signals-lead-glacier-acceleration http://data.cochrane.org/ontologies/pico/population https://w3id.org/np/RA5e5XeXy_-aNK5giB7kBAEQslTLVydHeM4YYEzhmEE2w/population https://w3id.org/sciencelive/np/RA1SwyraUv8RzgZFXlgYSlTapQp0Xp3DPW_XpeMwSEBFo/basal-signals-lead-glacier-acceleration http://purl.org/dc/terms/description For grounded outlet glaciers whose flow responds to surface meltwater or rain reaching the bed, do observations of the ice–bed boundary (basal water pressure and bed uplift), added to weather and melt observations and the glacier-speed history, predict glacier acceleration earlier and more skilfully than the speed history alone or the speed history with weather and melt? The key question is whether boundary observations change before acceleration, providing genuine lead time, rather than at the same moment as speed. 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