IRIDYA is a research project financed by the Italian Program of Research in the Arctic (call PRA-2021). The  main goal is the high-resolution, reconstruction of the palaeoceanographic and palaeoclimatic changes occurred around the Fram Strait during the last 60 ka and their impact on the paleo Svalbard-Barents Sea Ice Sheet (SBSIS) dynamics. Glacial terminations will be specifically focused as well as other climatic fluctuations responsible for meltwater events as direct evidence of the ice sheet feedback to climate warming. Such objectives are coherent with IODP 985-Full proposal submitted during 2020 by 14 international research institutes and scheduled to sail as IODP Exp-403 during June 4th-August 2nd, 2024 (download the scientific prospectus).

IRIDYA è un progetto finanziato dal Programma di Ricerche in Artico (PRA) che si prefigge di studiare l’effetto sull’ambiente e sul clima di imponenti eventi di scioglimento della calotta glaciale (meltwater pulses) che hanno caratterizzato i periodi post-glaciali come risposta più evidente al riscaldamento climatico. IRIDYA combinerà indagini geofisiche, sedimentologiche, geochimiche e micropaleontologiche dei dati acquisiti al largo delle Svalbard durante la spedizione artica 2021 della RV Laura Bassi e simulazioni numeriche della paleo-calotta glaciale per fornire un quadro dinamico sulla evoluzione del margine occidentale delle Svalbard durante gli ultimi 60 mila anni in risposta alle oscillazioni climatiche di breve termine responsabili dei meltwater pulses. Gli obiettivi di IRIDYA sono coerenti con la proposta di perforazione oceanica IODP 985-Full sottomessa nel 2020 da 14 istituti di ricerca internazionali e attualmente in programma di attuazione come IODP Exp-403 tra 4 Giugno – 2 Agosto, 2024 (scarica il prospetto scientifico).

« Definition of a detailed age model for continental margin cross correlations with other existing cores, and for geophysical data calibration;

« Reconstruction of depositional processes associated to climatic oscillations;

« Identification and characterisation of local/regional paleo ice sheet meltwater events;

« Reconstruction of the trigger mechanisms of past meltwater events;

« Reconstruction of local/regional impact of prominent meltwater events on glacial dynamics and oceanographic configuration (e.g. surface and deep water masses characterisation prior/during/after meltwater events);

« Definition of the delay between land surface (ice cores records) and marine (sediment cores records) feedbacks to palaeoclimatic changes as analog for on-going and projected global warming in polar areas;

« Identification of alternate sites suitable for IODP drill in support to proposal 985-Full.

« Definizione di un dettagliato modello di età utile per le correlazioni tra i punti di campionamento lungo il margine continentale e per la calibrazione dei dati geofisici;

« Ricostruzione dei processi sedimentari associati alle oscillazioni climatiche;

« Identificazione e caratterizzazione di eventi locali/regionali di scioglimento glaciale;

« Ricostruzione dei meccanismi che hanno innescato prominenti eventi di fusione glaciale;

« Ricostruzione dell'impatto locale/regionale causato da prominenti eventi di fusione glaciale sulla dinamica della calotta e sulla configurazione oceanografica (e.g., caratterizzazione delle acque oceaniche superficiali e profonde prima/durante/dopo eventi di fusione glaciale);

« Definizione del lasso di tempo intercorrente tra i cambiamenti paleo-climatici registrati sulla superficie terrestre (carote di ghiaccio) e in ambiente marino (carote di sedimenti) utile per definire/modellare i tempi di risposta delle calotte polari al presente riscaldamento globale;

« Identificazione di alternativi siti di perforazione IODP adatti agli scopi previsti nella proposta di ricerca 985-Full.

The research consortium of IRIDYA is composed of 4 Italian partners:

Il consorzio di ricerca di IRIDYA è composto da 4 partner italiani:

The National Institute of Oceanography and Applied Geophysics (OGS) is the main proponent and coordinator of the project. OGS is in charge for the new acquisition at sea, processing of the geophysical data and sedimentological analyses on the sediment cores.

L' Istituto Nazionale di Oceanografia e di Geofisica Sperimentale (OGS) è il principale proponente e coordinatore del progetto. OGS si occuperà della nuova acquisizione in mare, dell'elaborazione dei dati geofisici e delle analisi sedimentologiche sulle carote di sedimento.

The National Institute of Geophysics and Volcanology (INGV) is responsible for the definition of the age model of the sediment cores through palaeomagnetic and rock magnetic measurements and analyses.

L'Istituto Nazionale di Geofisica e Vulcanologia (INGV) è responsabile per la definizione del modello di età delle carote di sedimento attraverso misure paleomagnetiche.

The Department of Earth Sciences, University of Pisa (UniPI), contributes with the biostratigraphy, and the definition of the palaeoceanographic and palaeoclimatic conditions through the study of diatoms, radiolaria, nannofossils and foraminiferal assemblages (benthic and planktonic). UniPI will perform the foraminifera picking for radiocarbon dating.

Il Dipartimento di Scienze della Terra dell'Università di Pisa (UniPI), contribuirà con studi biostratigrafici, paleoceanografici e paleoclimatici attraverso l'analisi di micropaleontologica di diatomee, radioloari, nannofossili calcarei, e foraminiferi (bentonici e planctonici). UniPI si occuperà di preparare i campioni per effettuare le datazioni radiometriche sui gusci dei foraminiferi.

The Department of Environmental Sciences, Informatics and Statistics, of the Ca' Foscari University of Venice (UniVE), is responsible for stable isotopes (C and O) and Ca/Mg ratio analysis on the foraminiferal tests useful to depict palaeoclimatic information.

Il Dipartimento di Scienze Ambientali, Informatica e Statistica dell'Università Ca' Foscari di Venezia (UniVE), è responsabile per lo studio degli isotopi stabili (C e O) e del contenuto Ca/Mg nei gusci di foraminiferi utili per estrarre informazioni paleoclimatiche.

Caridi, F., Sabbatini, A., Bensi, M., Kovacevic V., Lucchi, R.G., Morigi, C., Povea, P., Negri, A., 2021. Benthic foraminiferal assemblages and environmental drivers along the Kveithola Trough (NW Barents Sea). Journal of Marine Systems, 2021, 224, 103616 https://doi.org/10.1016/j.jmarsys.2021.103616

Gamboa-Sojo, V.M., Husum, K., Caridi, F., Lucchi, R.G., Bensi, M., Sabbatini, A., Langone, L., Dominiczak, A.T., Povea, P., Morigi, C., 2021. Living and dead foraminiferal assemblages of the last decades from Kveithola Trough: Taphonomic processes and ecological highlights. Marine Micropaleontology 166 (2021) 102014 | https://doi.org/10.1016/j.marmicro.2021.102014

Bazzaro, M., Ogrinc, N., Relitti, F., Lucchi, RG, Giani, M., Adami, G., Pavoni, E., De Vittor, C., 2020. Geochemical signatures of intense episodic anaerobic oxidation of methane in near-surface sediments of a recently discovered cold seep (Kveithola trough, NW Barents Sea). Marine Geology, 425, 106189 | https://doi.org/10.1016/j.margeo.2020.106189

Petrini, M., Colleoni, F., Kirchner, N., Hughes, ALC, Camerlenghi, A., Rebesco, M., Lucchi, RG, Forte, E., Colucci, RR, Noormets, R., Mangerud, J ., 2020. Simulated last deglaciation of the Barents Sea Ice Sheet primarily driven by oceanic conditions. Quaternary Science Reviews, 238, 106314. | https://www.sciencedirect.com/science/article/pii/S0277379120302766?via%3Dihub

Caricchi, C., Sagnotti, L., Campuzano, SA, Lucchi, RG, Macrì, P., Rebesco, M., Camerlenghi, A., 2020. A refined age calibrated paleosecular variation and relative paleointensity stack for the NW Barents Sea : Implication for geomagnetic field behavior during the Holocene. Quaternary Science Reviews, 229, 106133 | https://doi.org/10.1016/j.quascirev.2019.106133

Shackleton, CS, Winsborrow, MCM, Andreassen, K., Lucchi, RG, and Bjarnadottir, L., 2020. Ice-margin retreat and grounding-zone dynamics during initial deglaciation of the Storfjordrenna Ice Stream, western Barents Sea. Boreas 49 ( 1), 38–51 | https://onlinelibrary.wiley.com/doi/10.1111/bor.12420

Caridi, F., Sabbatini, A., Morigi, C., Dell'Anno, A., Negri, A., Lucchi, RG Patterns and environmental drivers of diversity and community composition of macrofauna in the Kveithola Trough (NW Barents Sea) (2019) Journal of Sea Research 153, 101780 | https://www.sciencedirect.com/science/article/pii/S1385110118303654?via%3Dihub

Llopart, J., Urgeles, R., Forsberg, CF, Camerlenghi, A., Vanneste, M., Rebesco, M., Lucchi, RG, Rüther, DC, Lantzsch, H., 2019. Fluid flow and pore pressure development throughout the evolution of a trough mouth fan, western Barents Sea. Basin Research 31 (3), 487–513 | https://onlinelibrary.wiley.com/doi/10.1111/bre.12331

Caricchi, C., Lucchi, RG, Sagnotti, L., Macrì, P., Di Roberto, A., Del Carlo, P., Husum, K., Laberg, JS, Morigi, C., 2019. A high- resolution geomagnetic relative paleointensity record from the Arctic Ocean deep-water gateway deposits during the last 60 ky. Geochemistry, Geophysics, Geosystems 20 (5), 2355-2377 | https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2018GC007955

Bensi, M., Kovačević, V., Langone, L., Aliani, S., Ursella, L., Goszczko, I., Soltwedel, T., Skogseth, R., Nilsen, F., Deponte, D., Mansutti, P., Laterza, R., Rebesco, M., Rui, L., Lucchi, RG, Wåhlin, A., Viola, A., Beszczynska-Möller, A., Rubino, A., 2019. Deep flow variability offshore south-west Svalbard (Fram Strait). Water 11 (4), 683 | https://www.mdpi.com/2073-4441/11/4/683

Rui, L., Rebesco, M., Casamor, JL, Laberg, JS, Rydningen, TA, Caburlotto, A., Forwick, M., Urgeles, R., Accettella, D., Lucchi, RG, Delbono, I, Barsanti, M., Demarte, M., Ivaldi, R., 2019. Geomorphology and development of a high-latitude channel system: the INBIS channel case (NW Barents Sea, Arctic). arktos - The Journal of Arctic Geosciences 5 (1), 15–29 | https://link.springer.com/article/10.1007/s41063-019-00065-9

Petrini, M., Colleoni, F., Kirchner, N., Hughes, ALC, Camerlenghi, A., Rebesco, M., Lucchi, RG, Forte, E., Colucci, RR, Noormets, R., 2018. Interplay of grounding-line dynamics and sub-shelf melting during retreat of the Bjørnøyrenna Ice Stream. Nature Scientific Reports 8: 7196 | https://www.nature.com/articles/s41598-018-25664-6

Melis, R., Carbonara, K., Villa, G., Morigi, C., Bárcena, MA, Giorgetti, G., Caburlotto, A., Rebesco, M., and Lucchi, RG, 2018. A new multi- proxy investigation of the Late Quaternary palaeoenvironments along the northwestern Barents Sea (Storfjorden Trough Mouth Fan). Journal of Quaternary Science 33, 662-676 | https://onlinelibrary.wiley.com/doi/10.1002/jqs.3043

Caricchi, C., Lucchi, RG, Sagnotti, L., Macrì, P., Morigi, C., Melis, R., Caffau, M., Rebesco, M., Hanebuth, TJJ, 2018. Paleomagnetism and rock magnetism from sediments along a continental shelf-to-slope transect in the NW Barents Sea: implications for geomagnetic and depositional changes during the past 15 thousand years. Global and Planetary Change 160, 10-27. | https://www.sciencedirect.com/science/article/pii/S0921818117303077

Rigual Hernández, ASS, Colmenero-Hidalgo, E., Martrat, B, Bárcena, MA, de Vernal, A., Sierro, FJ, Flores, JA, Grimalt, JO, Henry, M., Lucchi, RG, 2017. Svalbard ice-sheet decay after the Last Glacial Maximum: new insights from micropalaeontological and organic biomarker paleoceanographical reconstructions. Palaeogeography, Palaeoclimatology, Palaeoecology 465, 225-236. | https://www.sciencedirect.com/science/article/pii/S0031018216306526

Zecchin, M., Rebesco, M., Lucchi, RG, Caffau, M., Lantzsch, H., Hanebuth, TJJ, 2016. Buried iceberg-keel scouring on the southern Spitsbergenbanken, NW Barents Sea. Marine Geology 382, ​​68- 79. | https://www.sciencedirect.com/science/article/pii/S0025322716302560?via%3Dihub

Carbonara, K., Mezgec, K., Varagona, G., Musco ME, Lucchi, RG, Villa, G., Morigi, C., Melis, R., Caffau, M., 2016. Palaeoclimatic changes in Kveithola, Svalbard , during the Late Pleistocene deglaciation and Holocene: Evidences from microfossil and sedimentary records. Palaeogeography, Palaeoclimatology, Palaeoecology 463, 136-149. | https://doi.org/10.1016/j.palaeo.2016.10.003

Rebesco M., Özmaral A., Urgeles R., Accettella D., Lucchi RG, Rüther D., Winsborrow M., Llopart J., Caburlotto A., Lantzsch H., Hanebuth TJ, 2016. Evolution of a high-latitude sediment drift inside a glacially-carved trough based on high-resolution seismic stratigraphy (Kveithola, NW Barents Sea). Quaternary Science Reviews 147, 178–193. | https://www.sciencedirect.com/science/article/pii/S0277379116300397

Sagnotti, L., Macrì, P., Lucchi, RG, 2016. Geomagnetic palaeosecular variation around 15 ka ago from NW Barents Sea cores (south of Svalbard). Geophysical Journal International 204, 784–797. | https://academic.oup.com/gji/article/204/2/785/593306

Rebesco, M., Urgeles, R., Özmaral, A., Hanebuth, TJJ, Lantzsch, H., Caburlotto, A., Hörner, T., Llopart, J., Lucchi, RG, Nicolaisen, LS, Osti, G ., Sabbatini, A., 2016. Grounding Zone Wedges, Kveithola Trough (NW Barents Sea). Grounding-zone wedges and mega-scale glacial lineations in Kveithola Trough, Barents. In: Dowdeswell JA, Canals M., Jakobsson M., Todd BJ, Dowdeswell EK, Hogan KA (Eds.) Atlas of Submarine Glacial Landforms. Geological Society of London Memoir 46, 231-232. | http://mr.crossref.org/iPage?doi=10.1144%2FM46.32

Lucchi, RG, Sagnotti, L., Camerlenghi, A., Macrì, P., Rebesco, M., Pedrosa, MT, Giorgetti, G., 2015. Marine sedimentary record of Meltwater Pulse 1a in the NW Barents Sea continental margin. arktos 1, 7. https://doi.org/10.1007/s41063-015-0008-6

Llopart, J., Urgeles, R., Camerlenghi, A., Lucchi, RG, Rebesco, M., De Mol, B., 2015. Late Quaternary development of the Storfjorden and Kveithola Trough Mouth Fans, North - Western Barents Sea. Quaternary Science Reviews, 129, 68–84. | https://doi.org/10.1016/j.quascirev.2015.10.002

Hanebuth, TJJ, Rebesco, M., Urgeles, R., Lucchi, RG, Freudenthal, T., 2014. Drilling glacial deposits in offshore polar regions. Eos, Transactions of the American Geophysical Union 95, 277–284. | https://agupubs.onlinelibrary.wiley.com/doi/abs/10.1002/2014EO310001

Rebesco, M., Laberg, JS, Pedrosa, MT, Camerlenghi, A., Lucchi, RG, Zgur, F., Wardell, N., 2014. Onset and growth of Trough-Mouth Fans on the North-Western Barents Sea margin –Implications for the evolution of the Barents Sea / Svalbard Ice Sheet. Quaternary Science Reviews 92, 227–234. | https://www.sciencedirect.com/science/article/pii/S027737911300320X?via%3Dihub

Llopart, J., Urgeles, R., Camerlenghi, A., Lucchi, RG, De Mol, B., Rebesco, M., Pedrosa, MT, 2014. Slope Instability of Glaciated Continental Margins: Constraints from Permeability-Compressibility Tests and Hydrogeological Modeling Off Storfjorden, NW Barents Sea. S. Krastel et al. (Eds.), Submarine Mass Movements and Their Consequences, Advances in Natural and Technological Hazards Research, Springer Science book series 37: 95-104. | https://link.springer.com/chapter/10.1007/978-3-319-00972-8_9

Lucchi, RG, Camerlenghi, A., Rebesco, M., Colmenero-Hidalgo, E., Sierro, FJ, Sagnotti, L., Urgeles, R., Melis, R., Morigi, C., Barcena, M.- A., Giorgetti, G., Villa, G., Persico, D., Flores, J.-A., Rigual-Hernandez, AS, Pedrosa, MT, Macrì, P., Caburlotto, A., 2013. Postglacial sedimentary processes on the Storfjorden and Kveithola trough mouth fans: Significance of extreme glacimarine sedimentation. Global and Planetary Change 111, 309-326. | https://www.sciencedirect.com/science/article/pii/S0921818113002270

Rebesco, M., Wåhlin, A., Laberg, JS, Schauer, U., Beszczynska-Möller, A., Lucchi, RG, Noormets R., Acettella D., Zarayskaya Y., Diviacco, P., 2013. Quaternary Contourite drifts of the Western Spitsbergen margin. Deep Sea Research Part I: Oceanographic Research Papers 79, pp. 156-168. | https://www.sciencedirect.com/science/article/pii/S0967063713001106?via%3Dihub

Rüther DC, Bjarnadóttir LR, Junttila J., Husum K., Rasmussen TL, Lucchi RG, Andreassen K., 2012. Pattern and timing of the north-western Barents Sea Ice Sheet deglaciation and indications of episodic Holocene deposition. Boreas, 41: 494-512 | https://onlinelibrary.wiley.com/doi/10.1111/j.1502-3885.2011.00244.x

Sagnotti L., Macrì P., Lucchi RG, Rebesco M., Camerlenghi A., 2012. A Holocene paleosecular variation record from the northwestern Barents Sea continental margin. Geochemistry, Geophysics, Geosystems, 12 (11), art. no. Q11Z33. | https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2011GC003810

Lucchi RG, Pedrosa MT, Camerlenghi A., Urgeles R., De Mol B., and Rebesco M., 2012. Recent submarine landslides on the continental slope of Storfjorden and Kveithola Trough-Mouth Fans (north west Barents Sea). Y. Yamada, K. Kawamura, K. Ikehara, Y. Ogawa, R. Urgeles, D. Mosher, J. Chaytor, M. Strasser (Eds.), Submarine Mass Movements and Their Consequences, Advances in Natural and Technological Hazards Research , Springer Science book series 31: 735-745 | https://link.springer.com/chapter/10.1007/978-94-007-2162-3_65

Rebesco M., Pedrosa MT, Camerlenghi A., Lucchi RG, Sauli C., De Mol B., Madrussani G., Urgeles R., Rossi G., Böhm G., 2012. One million years of climatic generated landslide events on the northwestern Barents Sea continental margin. Y. Yamada, K. Kawamura, K. Ikehara, Y. Ogawa, R. Urgeles, D. Mosher, J. Chaytor, M. Strasser (Eds.), Submarine Mass Movements and Their Consequences, Advances in Natural and Technological Hazards Research , Springer Science book series 31: 747-756 | https://link.springer.com/chapter/10.1007/978-94-007-2162-3_66

Pedrosa MT, Camerlenghi A., De Mol B., Urgeles R., Rebesco M., Lucchi RG, 2011. Seabed morphology and shallow sedimentary structure of the storfjorden and kveithola trough-mouth fans (north west barents sea). Marine Geology, 286 (1-4): 65-81. | https://www.sciencedirect.com/science/article/pii/S0025322711001265

CRUISE REPORTS

Lucchi RG, Romeo R., Accettella D., Caburlotto A., Coslovich F., Del Core M., Douss N., Gallerani A., Geletti R., Tomini I., Visnovich G., Zgur F., 2021. IRIDYA: Integrated reconstruction of ice sheet dynamics during Late Quaternary Arctic climatic transitions. Project Cruise Report of the R / V Laura Bassi Arctic expedition LB21, 06 / 08–14 / 09/2021, Bergen (NOR) - Bergen (NOR), 54 pp. |  https://doi.org/10.13120/5e6d8d78-ad64-4bcb-9023-0dee3e4b9d2c

Lucchi RG, Bazzaro M., Biebow N., Carbonara K., Caridi F., De Vittor C., Dominiczak A., Gamboa Sojo VM, Graziani S., Kovacevic V., Krueger M., Le Gall C., Mazzini A., Morigi C., Musco ME, Povea P., Relitti F., Ruggiero L., Rui L., Sabbatini A., Sánchez Guillamón O., Tagliaferro M., Topchiy M., Wiberg D., Zoch D. , with the collaboration of the scientific party of the Italian PNRA project DEFROST: Bensi M., Deponte D., Langone L., Laterza R., 2016. BURSTER: Bottom Currents in a Stagnant Environment. EUROFLEETS-2 Cruise Summary Report, R / V Polarstern expedition PS99-1, 13–23 / 06/2016, Bremerhaven (D) - Longyearbyen (N), 103 pp. | https://www.researchgate.net/publication/310600508_Eurofleets-2_Cruise_Summary_Report_Bottom_Currents_in_a_Stagnat_Environment_BURSTER_project

Lucchi RG, Kovacevic V., Aliani S., Caburlotto A., Celussi M., Corgnati L., Cosoli S., Deponte D., Ersdal EA, Fredriksson S., Goszczko I., Husum K., Ingrosso G., Laberg JS, Lacka M., Langone L., Mansutti P., Mezgec K., Morigi C., Ponomarenko E., Realdon G., Relitti F., Robijn A., Skogseth R., Tirelli V., 2014. PREPARED : Present and past flow regimen on contourite drifts west of Spitsbergen. EUROFLEETS-2 Cruise Summary Report, R / V GO Sars Cruise No. 191, 05/06/2014 - 15/06/2014, Tromsø - Tromsø (Norway), 89 pp. | https://www.researchgate.net/publication/266556598_PREPARED_Present_and_past_flow_regime_On_contourite_drifts_west_of_Spitsbergen