The Red River in Vietnam supports 20 million inhabitants, includes a major rice-growing\u00a0region, the mega-city of Hanoi and a range of industries each of which have expanded in\u00a0recent decades. The Red River Delta (RRD) delta area of the river is the agricultural\u00a0heartland of the region and provides crucial ecosystem services, including the retention\u00a0and removal of nutrients and pollutants for groundwater (drinking water) and marine\u00a0resource protection, carbon processing and flood protection. The Hoa Binh and Thac Ba\u00a0reservoirs are major impoundments upstream of the RRD, estimated to be responsible for\u00a0trapping substantial amounts of sediment, with major consequences for the delta and\u00a0downstream coastal zone. Mean discharge has reduced in tandem with reduced\u00a0suspended sediment (SS) transport, which together with sea level rise has contributed to\u00a0an increased risk of saline water intrusion in the RRD. This PhD project aims to\u00a0reconstruct, how dam installation has altered macro-nutrient (phosphate[P], nitrate[N] and\u00a0silicate[Si]) and SS load delivery to the RRD, as a means to better inform reservoir\u00a0management under increased downstream water resource demand and climate change\u00a0threats in the region. Via the collection and dating of Hoa Binh and Thac Ba reservoir\u00a0sediment cores (210Pb, 137Cs), this project will quantify changes in sediment\u00a0accumulation rate since dam construction. Particle size analyses, sediment elemental\u00a0analyses (ICP-MS), algal pigment biomarkers, diatom flora, biogenic silica quantification\u00a0(alkaline digestion) and stable isotope approaches (\u03b413C, \u03b415N and C\/N) will also be\u00a0applied to reconstruct alterations in nutrient biogeochemical cycling and N:P:Si\u00a0stoichiometry. Together, these approaches will permit the reconstruction of sediment and\u00a0nutrient retention in the reservoirs (since installation) and estimate downstream delivery\u00a0impacts to the RRD over time. This project provides the opportunity to conduct fieldwork\u00a0in Vietnam and via co-supervision at BGS, to learn key analytical principles here.<\/p>\n
All applicants should hold a minimum of a UK Honours Degree at 2:1 level in a subject\u00a0area including Geography (BSc), Environmental Science, Natural Science or\u00a0Geosciences. A basic understanding of limnology and the field and laboratory methods\u00a0suited to this study are expected (e.g. water chemistry). Applicants should have\u00a0experience in the theory or application of stable isotope techniques and\/or\u00a0palaeolimnological methods (e.g. sediment dating, core lithology, diatom flora). Some knowledge in statistical analysis and interpretation of data, along with knowledge of multivariate\u00a0practices is also welcomed.<\/p>\n
For further enquiries please contact Dr. Virginia Panizzo at the School of Geography, The Red River in Vietnam supports 20 million inhabitants, includes a major rice-growing\u00a0region, the mega-city of Hanoi and a range of industries each of which have expanded in\u00a0recent decades. The Red River Delta (RRD) delta area of the river is the agricultural\u00a0heartland of the region and provides crucial ecosystem services, including the retention\u00a0and removal of… Read More »From Rivers to Reservoirs: reconstructing downstream sediment transport to the Red River Delta, Vietnam<\/span><\/a><\/p>\n","protected":false},"author":363,"featured_media":5871,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"neve_meta_sidebar":"","neve_meta_container":"","neve_meta_enable_content_width":"","neve_meta_content_width":0,"neve_meta_title_alignment":"","neve_meta_author_avatar":"","neve_post_elements_order":"","neve_meta_disable_header":"","neve_meta_disable_footer":"","neve_meta_disable_title":"","jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[51],"tags":[44,14],"class_list":["post-5870","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-51","tag-case","tag-nottingham"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/wp.lancs.ac.uk\/envision\/files\/2017\/10\/Virginia-Panizzo-Image-400x400px.jpg?fit=400%2C400","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p8kFzn-1wG","jetpack-related-posts":[],"_links":{"self":[{"href":"http:\/\/wp.lancs.ac.uk\/envision\/wp-json\/wp\/v2\/posts\/5870","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/wp.lancs.ac.uk\/envision\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/wp.lancs.ac.uk\/envision\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/wp.lancs.ac.uk\/envision\/wp-json\/wp\/v2\/users\/363"}],"replies":[{"embeddable":true,"href":"http:\/\/wp.lancs.ac.uk\/envision\/wp-json\/wp\/v2\/comments?post=5870"}],"version-history":[{"count":1,"href":"http:\/\/wp.lancs.ac.uk\/envision\/wp-json\/wp\/v2\/posts\/5870\/revisions"}],"predecessor-version":[{"id":5872,"href":"http:\/\/wp.lancs.ac.uk\/envision\/wp-json\/wp\/v2\/posts\/5870\/revisions\/5872"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/wp.lancs.ac.uk\/envision\/wp-json\/wp\/v2\/media\/5871"}],"wp:attachment":[{"href":"http:\/\/wp.lancs.ac.uk\/envision\/wp-json\/wp\/v2\/media?parent=5870"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/wp.lancs.ac.uk\/envision\/wp-json\/wp\/v2\/categories?post=5870"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/wp.lancs.ac.uk\/envision\/wp-json\/wp\/v2\/tags?post=5870"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
\nUniversity of Nottingham via email: virginia.panizzo@nottingham.ac.uk<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"