{"doi":"10.1002/essoar.10512110.1","title":"Dynamics of magma chamber replenishment under buoyancy and pressure forces","abstract":"<jats:p>Active magma chambers are periodically replenished upon a combination of\nbuoyancy and pressure forces driving upward motion of initially deep\nmagma. Such periodic replenishments concur to determine the chemical\nevolution of shallow magmas, they are often associated to volcanic\nunrests, and they are nearly ubiquitously found to shortly precede a\nvolcanic eruption. Here we numerically simulate the dynamics of shallow\nmagma chamber replenishment by systematically investigating the roles of\nbuoyancy and pressure forces, from pure buoyancy to pure pressure\nconditions and across combinations of them. Our numerical results refer\nto volcanic systems that are not frequently erupting, for which magma at\nshallow level is isolated from the surface (â\\euroœclosed\nconduitâ\\euro? volcanoes). The results depict a variety of dynamic\nevolutions, with the pure buoyant end-member associated with effective\nconvection and mixing and generation of no or negative overpressure in\nthe shallow chamber, and the pure pressure end-member translating into\neffective shallow pressure increase without any dynamics of magma\nconvection associated. Mixed conditions with variable extents of\nbuoyancy and pressure forces illustrate dynamics initially dominated by\noverpressure, then, over the longer term, by buoyancy forces. Results\nglobally suggest that many shallow magmatic systems may evolve during\ntheir lifetime under the control of buoyancy forces, likely triggered by\nshallow magma degassing. That naturally leads to long-term stable\ndynamic conditions characterized by periodic replenishments of partially\ndegassed, heavier magma by volatile-rich fresh deep magma, similar to\nthose reconstructed from petrology of many shallow-emplaced magmatic\nbodies.</jats:p>","journal":null,"year":null,"id":29752,"datarank":0.0,"base_score":0.0,"endowment":0.0,"self_citation_contribution":0.0,"citation_network_contribution":0.0,"self_endowment_contribution":0.0,"citer_contribution":0.0,"corpus_percentile":null,"corpus_rank":null,"citation_count":0,"citer_count":0,"citers_with_citation_signal":0,"citers_with_endowment":0,"datacite_reuse_total":0,"is_dataset":false,"is_dataset_confidence":null,"is_data_producer":false,"deposit_databanks":null,"is_oa":false,"file_count":0,"downloads":0,"has_version_chain":false,"published_date":null,"fair_score":null,"fair_percentile":null,"algorithm_id":"datarank_citation_only_1hop_v6","ranking_scope":"data_only","authors":[{"id":163334,"name":"Deepak Garg","orcid":"0000-0003-2463-5185","position":1,"is_corresponding":false},{"id":163335,"name":"Paolo Papale","orcid":"0000-0002-5207-2124","position":2,"is_corresponding":false},{"id":163336,"name":"Chiara Paola Montagna","orcid":"0000-0001-6884-8401","position":3,"is_corresponding":false},{"id":163333,"name":"Antonella Longo","orcid":"0000-0001-6590-6346","position":0,"is_corresponding":false}],"reference_count":0,"raw_metadata":{"has_enrichment":true,"base_score":0.0,"endowment":0.0,"datacite_reuse_total":0,"file_count":0,"downloads":0,"views":0,"has_version_chain":false,"is_dataset":false,"is_oa":false,"pmid":"18998881","pmcid":null,"openalex_id":"https://openalex.org/W4302831248","authors":[],"funders":[],"total_grants":0,"fwci":0.0,"citation_percentile":0.12904331,"influential_citations":0,"citation_trend":[],"oa_status":"gold","license":"cc-by-nc","oa_locations":[{"url":"https://essopenarchive.org/doi/pdf/10.1002/essoar.10512110.1","host_type":""},{"url":"https://essopenarchive.org/doi/pdf/10.1002/essoar.10512110.1","host_type":""},{"url":"https://doi.org/10.1002/essoar.10512110.1","host_type":""}],"fields_of_study":["Geological and Geochemical Analysis","High-pressure geophysics and materials","earthquake and tectonic studies"],"mesh_terms":[],"keywords":["Buoyancy","Overpressure","Magma","Geology","Magma chamber","Volcano","Neutral buoyancy","Petrology","Convection","Mechanics","Geophysics","Geochemistry","Thermodynamics","Physics"],"sdg_mappings":[],"linked_datasets":[],"clinical_trials":[],"software_tools":[],"database_accessions":[],"source":"live","citation_network_status":"fetched"},"created_at":"2026-06-09T00:39:02.814242Z","pmid":null,"pmcid":null,"fwci":null,"citation_percentile":null,"influential_citations":0,"oa_status":null,"license":null,"views":0,"total_file_size_bytes":0,"version_count":0,"fair_f":null,"fair_a":null,"fair_i":null,"fair_r":null,"fair_zscore":null,"fair_rationale":null,"fair_model":null,"fair_agent_version":null,"fair_fulltext_source":null,"fair_has_llm":null,"fair_computed_at":null,"clinical_trials":[],"software_tools":[],"db_accessions":[],"linked_datasets":[],"topics":[]}