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(2026) deposit (Mendeley Data, doi:10.17632/8wvtxg53ry.1): 15 min GNSS positions, 1 min borehole pressure (BH2201), 10 min weather;\n- raw field data at the NIPR Arctic Data archive System (CC BY 4.0): 1 s GNSS from five receivers (A20220506-004), on-glacier air pressure (A20220506-001), and a 100 Hz accelerometer in borehole BH2201 (A20220506-002).\nThe deposit is parsed with the code of the earlier reproduction (doi:10.5281/zenodo.23257925).\nProcessing:\n- The raw GNSS is processed kinematically with RTKLIB 2.5.1 against a reference receiver on rock: forward filter only, so that no future data are used; GPS L1+L2; integer ambiguities fixed; checked against the published 15 min positions.\n- Basal pressure is corrected with the measured air pressure.\n- Every series is smoothed three ways: centred, causal (past data only) and robust causal Gaussian local-linear regression, at several bandwidths. Speed comes from the smoothed positions; acceleration from the speed.\nAnalysis:\n- Onsets are defined by declared rules (threshold exceedance at 2, 3 and 5 standard deviations of a pre-event day, persisting for 1 h; and a hinge change-point fit).\n- Leads are computed for every rule, bandwidth and reference window. A pre-registered majority rule with a 1 h tolerance labels each pair: basal leads, simultaneous, basal lags or indeterminate.\n- The detection delay of each causal speed estimator is measured on synthetic onsets with the observed noise and subtracted.\n- Further steps: lagged cross-correlation; lagged regressions for the three nested models, with rolling-origin and event hold-out evaluation; tests of the sub-daily speed variability (sidereal filtering for GNSS multipath, a tidal regression fitted before the event, a common-mode comparison with two further GNSS receivers); and bed-tilt series from the borehole accelerometer." } } } rows { name { value: "hasScopeDescription" } } rows { quad { p_iri { } o_literal { lex: "Whether basal water pressure (and bed uplift) changes before the acceleration of grounded ice, tested on the one meltwater- and rain-driven speed-up at Langhovde Glacier, East Antarctica, that was observed with basal pressure, GNSS and weather together: 2\342\200\2236 January 2022 (summer 2021/22).\n- In scope: the order and separation in time of the onsets of rain and melt, basal water pressure, bed uplift, bed tilt, and the speed and acceleration of a grounded and a floating GNSS station; the lead\342\200\223lag structure between these series; and a descriptive version of the proposed comparison of three nested models (speed history; plus weather and melt; plus basal pressure and uplift).\n- Out of scope: the proposed held-out prediction across events. It needs several events with basal pressure, and this record has one, so it could not be run. Also out of scope: other glaciers or seasons, and the physical mechanism linking pressure and sliding." } } } rows { name { value: "targetsClaim" } } rows { name { value: "RAabNA0LyeNQVSDx1eVXRdbVXGd2qktH_w_aRxKBM7J3M" } } rows { quad { p_iri { } o_iri { prefix_id: 1 } } } rows { name { value: "wasAttributedTo" } } rows { prefix { value: "https://orcid.org/" } } rows { name { value: "0000-0002-1784-2920" } } rows { quad { s_iri { prefix_id: 2 name_id: 4 } p_iri { prefix_id: 5 name_id: 27 } o_iri { prefix_id: 13 } g_iri { prefix_id: 2 name_id: 7 } } } rows { prefix { value: "http://xmlns.com/foaf/0.1/" } } rows { name { value: "name" } } rows { quad { s_iri { prefix_id: 13 name_id: 28 } p_iri { prefix_id: 14 } o_literal { lex: "Anne Fouilloux" } g_iri { prefix_id: 2 name_id: 9 } } } rows { name { value: "created" } } rows { datatype { value: "http://www.w3.org/2001/XMLSchema#dateTime" } } rows { quad { s_iri { prefix_id: 1 name_id: 1 } p_iri { prefix_id: 7 name_id: 30 } o_literal { lex: "2026-10-09T19:15:45.939Z" datatype: 1 } } } rows { name { value: "creator" } } rows { quad { p_iri { } o_iri { prefix_id: 13 name_id: 28 } } } rows { name { value: "license" } } rows { prefix { value: "https://creativecommons.org/licenses/by/4.0/" } } rows { quad { p_iri { prefix_id: 7 name_id: 32 } o_iri { prefix_id: 15 name_id: 2 } } } rows { name { value: "introduces" } } rows { quad { p_iri { prefix_id: 6 name_id: 33 } o_iri { prefix_id: 2 name_id: 12 } } } rows { name { value: "wasCreatedAt" } } rows { prefix { value: "https://" } } rows { name { value: "platform.sciencelive4all.org" } } rows { quad { p_iri { prefix_id: 6 name_id: 34 } o_iri { prefix_id: 16 } } } rows { quad { p_iri { prefix_id: 10 name_id: 15 } o_literal { lex: "Lead time of basal water pressure before glacier acceleration, Langhovde Glacier, January 2022 (exploratory, one event)" } } } rows { prefix { id: 8 value: "https://w3id.org/np/o/ntemplate/" } } rows { name { value: "wasCreatedFromTemplate" } } rows { prefix { id: 4 value: "https://w3id.org/np/" } } rows { name { value: "RAuLEjPp-4dTvPwMkfHggTto1CgjIftiGRAgHlyeEonjQ" } } rows { quad { p_iri { prefix_id: 8 name_id: 36 } o_iri { prefix_id: 4 } } } rows { name { value: "sig" } } rows { name { value: "hasAlgorithm" } } rows { quad { s_iri { prefix_id: 2 } p_iri { prefix_id: 6 } o_literal { lex: "RSA" } } } rows { name { value: "hasPublicKey" } } rows { quad { p_iri { } o_literal { lex: "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" } } } rows { name { value: "hasSignature" } } rows { quad { p_iri { } o_literal { lex: "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" } } } rows { name { value: "hasSignatureTarget" } } rows { quad { p_iri { } o_iri { prefix_id: 1 name_id: 1 } } } rows { name { value: "signedBy" } } rows { quad { p_iri { prefix_id: 6 name_id: 43 } o_iri { prefix_id: 13 name_id: 28 } } }