{"id":29684,"date":"2024-08-21T13:00:12","date_gmt":"2024-08-21T13:00:12","guid":{"rendered":"https:\/\/usoceandiscovery.org\/?page_id=29684"},"modified":"2024-12-23T15:59:27","modified_gmt":"2024-12-23T15:59:27","slug":"yan-zhang","status":"publish","type":"page","link":"https:\/\/usoceandiscovery.org\/yan-zhang\/","title":{"rendered":"Yan Zhang"},"content":{"rendered":"<div class=\"fusion-fullwidth fullwidth-box fusion-builder-row-1 fusion-flex-container nonhundred-percent-fullwidth non-hundred-percent-height-scrolling\" style=\"background-color: rgba(255,255,255,0);background-position: center center;background-repeat: no-repeat;border-width: 0px 0px 0px 0px;border-color:var(--awb-color3);border-style:solid;\" ><div class=\"fusion-builder-row fusion-row fusion-flex-align-items-flex-start\" style=\"max-width:1456px;margin-left: calc(-4% \/ 2 );margin-right: calc(-4% \/ 2 );\"><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-0 fusion_builder_column_2_3 2_3 fusion-flex-column\"><div class=\"fusion-column-wrapper fusion-flex-justify-content-flex-start fusion-content-layout-column\" style=\"background-position:left top;background-repeat:no-repeat;-webkit-background-size:cover;-moz-background-size:cover;-o-background-size:cover;background-size:cover;padding: 0px 0px 0px 0px;\"><div class=\"fusion-text fusion-text-1\"><h3>The evolution of inter-basin \u03b415N gradients since the Miocene: Insights from a new simple realistic global N cycle model<\/h3>\n<p>&nbsp;<\/p>\n<p><strong><a href=\"https:\/\/usoceandiscovery.org\/wp-content\/uploads\/2024\/04\/Zhang.jpg\"><img decoding=\"async\" class=\"size-full wp-image-28327 alignright\" src=\"https:\/\/usoceandiscovery.org\/wp-content\/uploads\/2024\/04\/Zhang.jpg\" alt=\"\" width=\"230\" height=\"300\" srcset=\"https:\/\/usoceandiscovery.org\/wp-content\/uploads\/2024\/04\/Zhang-200x261.jpg 200w, https:\/\/usoceandiscovery.org\/wp-content\/uploads\/2024\/04\/Zhang.jpg 230w\" sizes=\"(max-width: 230px) 100vw, 230px\" \/><\/a>Abstract<\/strong><\/p>\n<p>Nitrogen (N), a critical nutrient in the ocean, influences biological productivity, carbon sequestration, and climate change; yet there is limited knowledge of long-term oceanic N cycling and budget on million-year timescales due to the lack of N isotope (\u03b4<sup>15<\/sup>N) records and of model framework to simulate the data. In this study, I propose to build a biogeochemical box model of global oceanic N cycle to simulate basin-resolved \u03b4<sup>15<\/sup>N and constrain the rates of N cycle processes over geological time. Newly published \u03b4<sup>15<\/sup>N records show dramatic change in \u03b4<sup>15<\/sup>N gradient between Pacific and Atlantic since the Miocene and I propose to apply this model to investigate the mechanisms driving the striking inter-basin \u03b4<sup>15<\/sup>N gradient evolution over the last 25 Myr. This model will offer inferences about the operation of the ocean N cycle for future studies and the Miocene simulations will offer new insight into long-term N dynamics and budget during the past warm periods.<\/p>\n<p>&nbsp;<\/p>\n<p><strong>Biography<\/strong><\/p>\n<p>I was born in the vibrant province of Sichuan, China and spent my childhood in Chongqing, a city renowned for its mountainous terrain and delicious hot pot. As an undergraduate, my interests in paleoceanography stemmed from a fascinating course taught by professor Zhimin Jian and I earned a B.S. in marine geology at Tongji University in Shanghai. I was further drawn into the field of paleoceanography and paleoclimate through my senior thesis project. During this project, I reconstructed the dust flux at ODP Site 1208 in the North Pacific during the late Pleistocene, advised by Dr. David McGee at the Massachusetts Institute of Technology. Currently, I am pursuing a Ph.D. at the University of California, Santa Cruz, working with Dr. Christina Ravelo. My research focus is on exploring the long-term marine nitrogen cycling on million-year timescales and understanding how nitrogen dynamics interact with climate changes by using nitrogen isotopes combined with modeling simulations. For my Schlanger project, I am working with Dr. Mathis Hain to build an isotope-enabled biogeochemical box model of global nitrogen cycling. Our goal is to investigate the mechanisms driving the inter-basin nitrogen isotope gradient evolution since the Miocene.<\/p>\n<\/div><\/div><style type=\"text\/css\">.fusion-body .fusion-builder-column-0{width:66.666666666667% !important;margin-top : 0px;margin-bottom : 0px;}.fusion-builder-column-0 > .fusion-column-wrapper {padding-top : 0px !important;padding-right : 0px !important;margin-right : 2.88%;padding-bottom : 0px !important;padding-left : 0px !important;margin-left : 2.88%;}@media only screen and (max-width:1024px) {.fusion-body .fusion-builder-column-0{width:66.666666666667% !important;}.fusion-builder-column-0 > .fusion-column-wrapper {margin-right : 2.88%;margin-left : 2.88%;}}@media only screen and (max-width:640px) {.fusion-body .fusion-builder-column-0{width:100% !important;}.fusion-builder-column-0 > .fusion-column-wrapper {margin-right : 1.92%;margin-left : 1.92%;}}<\/style><\/div><\/div><style type=\"text\/css\">.fusion-body .fusion-flex-container.fusion-builder-row-1{ padding-top : 0px;margin-top : 0px;padding-right : 0px;padding-bottom : 0px;margin-bottom : 0px;padding-left : 0px;}<\/style><\/div>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":13,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_exactmetrics_skip_tracking":false,"_exactmetrics_sitenote_active":false,"_exactmetrics_sitenote_note":"","_exactmetrics_sitenote_category":0,"jetpack_post_was_ever_published":false,"footnotes":""},"class_list":["post-29684","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.6 - 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