J. Kirk Cochran Marine Sciences Research Center State University of New York Natural and Anthropogenic Radionuclides in Coastal Systems- Examples from.

Slides:

Advertisements

Similar presentations

2.1 Triangle Marsh What is the impact of mining on Hg concentrations in estuary? What is natural concentration of Hg? Hg-P Hg- DOC Project designed to.

Advertisements

The South Bay Salt Pond Restoration Project and Bay Water Quality SFEI Letitia Grenier, Jay Davis, Robin Grossinger.

Francesco Scarton 1, Daniele Are 1, Andrea Rismondo 1 and John Day 2 Accretion and elevation changes on salt marshes and reedbeds of the lagoon of Venice:

Section 4. Erosional Problems  America's Pacific Coast Narrow beaches with steep cliffs and mountain ranges Problems come from the changing of natural.

Beaches and Coastal Environments of Washington Southern WA Coast – sandy beaches, spits, lagoons, sediment supply from Columbia River, northward longshore.

The Coastal Wetlands Planning, Protection and Restoration Act Presentation for the National Science Teachers Association Meeting New Orleans, LA November.

RADINUCLIDES IN THE OCEANS: a tool for understanding the ecosystems functioning Roberta Delfanti ENEA – Marine Environment Research Centre, La Spezia IAEA.

CHAPTER 10 The Coast: Beaches and Shoreline Processes.

The impact of accelerated sea level rise on coastal wetlands and its implications on storm surge - The story of lower Pascagoula River Basin in Jackson.

N. Tambroni, G. Seminara A one-dimensional eco-geomorphic model of marsh response to sea level rise: Wind effects, dynamics of the marsh border and equilibrium*

Information contained within this presentation is from a currently unpublished thesis, and should not be used or referenced without the expressed permission.

Wetland Sediment Accumulation in the Context of Sediment Availability and Climate Change (Draft – not to be used without permission) John Callaway 1, Tom.

Submarine Groundwater Discharge into the ocean off Mangueira Lagoon via 222 Rn and Ra isotopes: Preliminary findings and perspectives Isaac R. Santos;

Vulnerabilities and Small Islands October 24, 2002 COP 8 New Delhi, India.

Hydrosphere Only planet with correct atmospheric pressure and temperature to allow water to exist in all its phases 97% water held in ocean basins 2% water.

12.2 Types of Coasts Primary coasts –Effect of ice ages –Effect of sediment carried by rivers –Effect of wind –Effect of volcanic activity –Effect of tectonic.

Weathering Sources in the Kaoping River Catchment, Southwestern Taiwan: Insights From Major and Trace Elements, Sr Isotopes and Rare Earth Elements C.-F.

Beaches and Coastal Environments of Washington Southern WA Coast – sandy beaches, spits, lagoons, sediment supply from Columbia River, northward longshore.

Discussion In order to understand how these co-varying forcings act on different grain-sizes of particles, the EOF (empirical orthogonal function) analysis.

The MARGINS Program “To understand the complex interplay of processes that govern the evolution of continental margins”

ROMS modeling of stormwater plumes and anthropogenic nitrogen inputs in the SCB Eileen Idica PhD candidate, Dept Civil &

Nepheloid transport vs gravity flows gravity flows and sea level narrow, steep shelves receive much sed different type of gravity flow mass and chemical.

Chapter 7 Section 2 Environmental Science Ms. Mandel

ANTHROPOGENIC INFLUENCES OF MERCURY CONCENTRATIONS IN ‘SNAG LAKE’ SEDIMENT Kathleen J. Gosnell, William M. Landing, Department of Oceanography, Florida.

Sand Transport in the San Francisco Bay Coastal System Patrick Barnard 1, Daniel Hanes 1, Li Erikson 1, Sand Transport in the San Francisco Bay Coastal.

Sediment Sedimentation rate values in the Manila Bay and Thailand Gulf using 210Pb method Che Abd Rahim Mohamed Marine Ecosystem.

Reading #3 Coasts, Estuaries, and Environmental Issues.

Historical Sedimentation in the San Francisco Estuary Bruce Jaffe 1, Theresa Fregoso 1, Amy Foxgrover 1, Shawn Higgins 2 1 United States Geological Survey.

An Overview of Barnegat Bay New Jersey Habitats of the Barnegat Bay Ecosystem OCC 2012.

Control Volume Inputs Mass Balance Modeling Outflows.

Case study: 137 Cs as tracer for sedimentation processes in an Italian coastal area Roberta Delfanti, ENEA - La Spezia, Italy IAEA Regional Training Course.

ZACHARY OCHOA P5.  A group of islands that an arc shaped distribution. These islands are usually of volcanic origin and are associated with subduction.

Elkhorn Slough Tidal Wetlands Project December 8, 2006.

Kaijun Su a, Jinzhou Du a, *, Mark Baskaran b and Jing Zhang a State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai.

Catherine Jeandel, Marseille 2004: Geochemistry in KEOPS Chlorophyll (mg m -3 ) Among the objectives of KEOPS - Identification of the mechanisms of natural.

Begin with introductory video

Banks Peninsula Key surface features: Two dominant craters, and a circular shape. (1 st ) Bays, coves, and two deep harbours (2 nd ) Hilly landscape Internal.

Methylmercury Production in Groundwater Watershed Hg Research Program at SERC Deposition Transport Watershed retention Methylation MDN site MD00 Stream.

Freshwater Discharges to Central Coast Marine Protected Areas and the Nearshore Environment Karen R. Worcester David M. Paradies Central Coast Ambient.

Carl Hershner Climate change impacts in Virginia.

Chapter 7.2 (cont.) Groundwater as precipitation hits the ground, it may either (a) soak into the ground (infiltration) or this water has two alternatives:

GEOL 1033 (Lesson 32 & 36) ppt file

Coastal Oceanography Outline Global coastal ocean Dynamics Western boundary current systems Eastern boundary current systems Polar ocean boundaries Semi-enclosed.

Karol Kuli n ski Marine Chemistry and Biochemistry Department Supervisor: Janusz Pempkowiak Carbon cycling in the Baltic Sea Introduction Goal Methods.

Beaches and Coastal Environments of Washington Southern WA Coast – sandy beaches, spits, lagoons, sediment supply from Columbia River, northward longshore.

Barrier Islands… The low down.. On these important depositional features The low down.. On these important depositional features.

Rande Kamolz Tyler Huntley GEOG 4401/5401 Soils Geography Fall 2007 – Univ of Colorado, Boulder.

How vulnerable is the Lower Niger Delta to inundation from Sea Level Rise? ZAHRAH N. MUSA, IOANA POPESCU, ARTHUR MYNETT UNESCO-IHE, Institute for Water.

TRACE METAL AND DIOXIN DEPOSITION HISTORY IN HURRICANE KATRINA IMPACTED MARSH SEDIMENT Gopal Bera* and Alan Shiller (The University of Southern Mississippi,

Forecasting Wind Setup in a Coastal Estuary Presenter: Jeff Colvin Steven Lazarus, Michael Splitt, Bryan Holman Robert Weaver, Peyman Taeb, Atoosa Saberi.

Habitat Destruction: Loss of Estuaries ALICIA CALLENDER BIOL INTRODUCTION TO BIOLOGY II UNIVERSITY OF HOUSTON-DOWNTOWN.

Dr. Claudia Benitez-Nelson University of South Carolina Radionuclides in Ocean: A General Introduction to Marine Radioactivity.

ESTUARIES Estuaries are semi-enclosed, transition areas where fresh water mixes with salt water (called brackish). U.S. has nearly 900 estuaries. Most.

The low down.. On these important depositional features

lesson 2: The physical environment and flooding

Denitrification in Delaware Bay Tidal Marshes and Creeks

6th Grade Earth Science October 2017

North Carolina’s Outer Banks

하구및 연안생태Coastal management

하구및 연안생태Coastal management

6th Grade Earth Science October 2017

하구및 연안생태Coastal management

하구및 연안생태Coastal management

Jeopardy Final Jeopardy Topic 1 Topic 2 Topic 3 Topic 4 Topic 5 $100

Offshore bars Barrier beaches and islands

Victoria Schoenwald Undergraduate Program

Presentation transcript:

J. Kirk Cochran Marine Sciences Research Center State University of New York Natural and Anthropogenic Radionuclides in Coastal Systems- Examples from the Venice Lagoon

November 4,1966 ‘Acqua alta’ of 120 cm flooded most of Venice

Venice Lagoon Facts 550 km 2 surface area Average depth ~0.6 m Tidal range 60 cm Three inlets through which tidal exchange occurs Daily tidal exchange ~ m 3 Flushing time <2 days

Venice Lagoon in 16 th Century Diversion of rivers

Venice Lagoon- Late 20 th Century Construction of industrial area- Marghera

Environmental issues in the Venice Lagoon Sea level rise- caused by land subsidence (ground water extraction on mainland) and eustatic sea level rise Fate of contaminants that enter the lagoon

60 cm Atmospheric flux (Be-7, Pb-210, Cs-137)

Contaminant Inputs and Retention Contaminants -Metals -Organic Contaminants Pathways -Atmosphere -Run-off -Submarine groundwater discharge Fate (Scavenging, Accumulation)

Contaminant Inputs

Lead in lagoon sediments

Zinc in lagoon sediments

Copper in lagoon sediments

Scavenging Rates of Reactive Contaminants Use U/Th series radionuclides as tracers Known source Measure distributions

234 Th diss 238 U 234 Th part Scavenging Decay Decay k Sinking Simplified Th Scavenging Model

234 Th/ 238 U Activity Ratios and Residence Times Venice Lagoon 234 Th/ 238 U  scavenging (d) Giudecca ± 0.04 Sacca Sessola ± 0.1 Cona (Bocca Carozza)<0.002<0.05 Cona (La Rotta) ± 0.2 Long Island Sound (Aller and Cochran, 1976) Narragansett Bay (Santschi et al. 1979) 0.06 – New York Bight (Kaufman et al. 1981) 0.17 –

Wetlands

Sea Level Curves: Venice and Trieste Source: Carbognin (1999)

Source: Gatto and Carbognin (1981)

Rates of Sea Level Rise in Venice and Trieste (mm/y) Venice Trieste Carbognin (1999)

Frequency of Acqua Alta

Marsh Sampling Sites

Marsh Coring

Marsh Chronologies with 210 Pb

210 Pb profiles in Venice marsh sediments

Chronology of marsh accretion Accretion rates generally have increased with time, with relative rate of sea level rise Patterns similar in northern and southern areas of lagoon

137 Cs profiles in marsh sediments

Chronologies of 137 Cs flux to Venice marshes Chernobyl Weapons testing (atmosphere)

Marsh accretion linked to frequency of acqua alta

Acqua Alta and Accretion Rates

Marsh Accretion Results Accretion at sites examined driven by long-term sea level rise and frequency of flooding by acqua alta events Sites keeping pace with sea level rise (at least) But marsh area is being lost via bank erosion along periphery (waves from boat traffic)