[Eoas-seminar] EOAS Colloquium on Friday, Sep. 18 at 3:00 PM

[eoas-seminar at lists.fsu.edu]

Dear All, A zoom link (https://fsu.zoom.us/j/97163303059<https://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2Ffsu.zoom.us%2Fj%2F97163303059&data=05%7C02%7Ceoas-seminar%40lists.fsu.edu%7Ce2609896ee7b44fe51e608df15a45ab0%7Ca36450ebdb0642a78d1b026719f701e3%7C0%7C0%7C639253467784062542%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=Lo5d7Prjdp8zdttYdwrbWWAFXPDUmZKXpo19NmgY0HM%3D&reserved=0>) is added for those who want to attend the seminar remotely. -Ming

--------------
Ming Ye, Ph.D.
Professor in Hydrogeology
Department of Earth, Ocean, and Atmospheric Science
Department of Scientific Computing

From: Eoas-seminar <eoas-seminar-bounces at lists.fsu.edu> On Behalf Of eoas-seminar--- via Eoas-seminar
Sent: Friday, September 18, 2026 11:34 AM
To: eoas-seminar--- via Eoas-seminar <eoas-seminar at lists.fsu.edu>
Subject: [Eoas-seminar] Fw: EOAS Colloquium on Friday, Sep. 18 at 3:00 PM

Hi all,

This is a friendly reminder that we will have an EOAS colloquium today at 3:00 PM. Please see the attached information.

Cheers,

Zhaohua

________________________________
From: Eoas-seminar <eoas-seminar-bounces at lists.fsu.edu<mailto:eoas-seminar-bounces at lists.fsu.edu>> on behalf of eoas-seminar--- via Eoas-seminar <eoas-seminar at lists.fsu.edu<mailto:eoas-seminar at lists.fsu.edu>>
Sent: Monday, September 14, 2026 10:47 AM
To: eoas-seminar--- via Eoas-seminar <eoas-seminar at lists.fsu.edu<mailto:eoas-seminar at lists.fsu.edu>>
Subject: [Eoas-seminar] EOAS Colloquium on Friday, Sep. 18 at 3:00 PM


Hi all,



I am happy to announce that we will have an EOAS colloquium this Friday, September 18, 2026. The speaker of this week's colloquium will be Dr. Natasha Dimova of the University of Alabama. The following is the information about the colloquium:



Speaker: Dr. Natasha Dimova, The University of Alabama


Title: Organic-rich subterranean estuaries (STE) along the northern Gulf of Mexico: implications for coastal groundwater quality


Abstract:

Land development can alter coastal morphology, shallow groundwater flow paths, and the composition of groundwater reaching the ocean. Subterranean estuaries (STEs) are increasingly recognized as biogeochemically reactive zones. Little is known about carbon and nutrient transformations along anoxic groundwater flow paths through deeper (2–3 m), old or recently buried organic-rich deposits. This gap is important because the amount and reactivity of organic matter can strongly regulate the attenuation of land-derived contaminants such as anthropogenic nitrogen and affect coastal water quality.
In this talk, I will present results on biogeochemical transformations in an organic-rich STE in Mobile Bay, AL, which was formed when a salt marsh was buried during residential development in the 1970s. Field shallow geophysical exploration and sediment core collection show that these buried, organic-rich marsh deposits currently act as a conduit for shallow groundwater discharge. Nitrogen balance indicates that these deposits substantially attenuate anthropogenic NO₃⁻ transported toward the coast. However, degradation of the buried marsh organic matter releases DOC, DON, and NH₄⁺ into groundwater. We hypothesize that these products may ultimately reach coastal waters, increase the oxygen demand, and potentially contribute to coastal hypoxia.

More recent experiments also demonstrate that these processes are sensitive to environmental conditions expected to change in shallow coastal aquifers. For example, we found that salinization alters both DOM composition and the mechanisms responsible for NH₄⁺ mobilization, while longer residence times lead to accumulation of increasingly degraded DOM.


Time: 3:00 PM, Friday, September 18, 2026



Location: EOA 1044



Contact: Prof. Ming Ye (mye at fsu.edu<mailto:mye at fsu.edu>)



A flyer for the colloquium is also attached.



Cheers,



Zhaohua



***************************************************************

Zhaohua Wu, Professor

Earth, Ocean, and Atmospheric Science Building, Room 6041, and

Center for Ocean-Atmospheric Prediction Studies, Room 295

Florida State University

Tallahassee, Florida

zwu at fsu.edu<mailto:zwu at fsu.edu>

****************************************************************



-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.fsu.edu/pipermail/eoas-seminar/attachments/20260918/57d319de/attachment.html>