GEOL 1033 (Lesson 32 & 36) ppt file

Slides:

Advertisements

Similar presentations

What’s an Estuary?.

Advertisements

Estuaries. What is an Estuary?  Location where ocean meets a river, either the ocean enters the river, or at a wide river mouth fresh water enters the.

Estuaries Place where freshwater from a river or stream mixes with salt water from the ocean Embayment- Coastal area that is partially cut off from the.

Estuaries rank high among the environments most affected by humans

Wetlands  Wetlands contain fresh water for part of the year -trap and filter sediments and pollutants -protect shorelines from erosion -spawning grounds.

Chapter 12 Estuaries: Where Rivers Meet the Sea Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display.

Estuaries Shipley Marine Biology

Welcome Envirothonners!

Lesson Overview 4.5 Aquatic Ecosystems.

Estuaries & Salt Marshes1 Estuaries and Salt Marshes Essential Nursery Habitat.

What is an Estuary? By Ms. Aldridge.

7-2 COASTAL WETLANDS.

Palaemonetes – glass shrimp. Boundary Habitats Estuaries.

Chapter 5 Aquatic Ecosystems.

Coastal Areas — Why do we care?. Popular More than 60% of world’s population lives within 60 miles of the coast.

Where Rivers Meet the Sea

Water for Virginia Master Naturalists: Estuaries & Coasts.

Lecture 14 - ESTUARIES. Last Ice Age Classification of Estuaries - Geological 1.Coastal Plain Estuary (= Drowned River Estuary)

Coastal Ocean Laws of ocean ownership Estuaries Humans interactions.

Coasts Characteristics of US coastlines. Coastal Waters Classification of coastal waters Adjacent to land (to edge of continental shelf) Influenced by.

Located near the shores of any of the oceans. Partially enclosed body of water where freshwater meets salt water. These estuaries are influenced by the.

Chapter 12 Estuaries. Types of Estuaries Drowned river valleys Drowned river valleys –Most common type of estuary –They were formed by the “drowning”

Characteristics of major types of coastal zones

Estuaries An estuary is where a river meets the sea or ocean.

Transitional Ecosystems - Brackish Water. I. Brackish water –is a term used for areas wherefreshwater combines with salty ocean water. A. It is not as.

Physical Features of Estuaries. Basic Information Estuaries vary in origin, size and type Estuaries vary in origin, size and type Also called: lagoons,

Chapter 15: The Dynamic Coast

Chapter 7 Aquatic Ecosystems Environmental Science Spring 2011.

_____________ An ________ is a partially _________ body of water of variable salinity, –with a freshwater ________ at one end and seawater introduced by.

Estuaries By Dan Lawson. What is an estuary? An estuary is a coastal body of water which is openly connecting a freshwater stream with a saltwater environment.

Introduction to Watershed Science Marc Epstein, Instructor

Do Now: What happens to water when salt and fresh water mix?

What are Estuaries? An estuary is a body of water along the coast where freshwater from rivers and streams meet and mix with salt water from the ocean.

ESTUARIES. What is an estuary? Area where fresh water meets salt water Semi-enclosed Transition zone Includes bays and lagoons.

Coasts Shore. Classifying Coasts Primary Coast Secondary Coast.

Land-Ocean Interactions: Estuarine Circulation. Estuary: a semi-enclosed coastal body of water which has a free connection with the open sea and within.

Coastal Waters and Marginal Seas

Oceans. Why is the Ocean Salty? 1. The ocean is salty because of dissolved chemicals eroded from the Earth's crust and washed into the sea. 2. Ejections.

Estuaries Chapter 8 – Talley et al. Outline: What is an estuary?

INTRODUCTION TO BEACHES & COASTS GEOL 1033 (Lesson 32) Ppt file

Chapter 12 Estuaries. Types of Estuaries Drowned river valleys Drowned river valleys –Most common type of estuary –They were formed by the “drowning”

CHESAPEAKE BAY. Chesapeake as an Estuary An estuary is a semi-enclosed body of water that has a free connection with the sea An estuary is a semi-enclosed.

OCEANS INTRO AND ESTUARY REVIEW Module 7. THE OCEAN IS A DYNAMIC SYSTEM- ALWAYS CHANGING!  The ocean is an important source of food and mineral resources.

Estuaries from land to sea. What is an Estuary?  An estuary is a coastal area where freshwater from rivers and streams mixes with saltwater from the.

© 2014 Pearson Education, Inc. Chapter 11 The Coastal Ocean Types of Coastal Waters.

CHESAPEAKE BAY BASICS. Chesapeake as an Estuary An estuary is a semi-enclosed body of water that has a free connection with the sea and within which seawater.

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

Some Types of Coastlines A closer look at: Estuaries, Deltas and Barrier Islands.

Estuaries rank high among the environments most affected by humans

JQ: What is an estuary? The Kalalau Trail – Kauai.

The Chesapeake Bay Estuary

Section 3: Aquatic Ecosystems

Section 3: Aquatic Ecosystems

Characteristics of major types of coastal zones

Estuaries: Where Rivers Meet the Sea

Ecosystem #3 The Estuary.

Characteristics of Coastal Waters

COASTS and SHORELINE NOTES

Chapter 12 Estuaries.

What’s an Estuary?.

Chapter 12 Lecture Slides

Section 3: Aquatic Ecosystems

Why do sea levels change globally???

하구및 연안생태Coastal management

Presentation transcript:

GEOL 1033 (Lesson 32 & 36) ppt file 103-30 ESTUARIES GEOL 1033 (Lesson 32 & 36) ppt file 103-30

ESTUARIES, BAYS, & LAGOONS Bays = a general term for a coastal embayment. Estuary = a bay that is semi-enclosed, has fresh-water input from a river(s), & experiences tides. Lagoon = semi-enclosed bay with little or no river input & reduced to essentially no tides.

ESTUARIES Estuaries have: Estuaries are young features Tidal influences Tidal flats Salt marshes Wave action River influences (freshwater, sediment input, & nutrients) Sediment accumulation is significant Estuaries are young features Because they tend to fill with sediments They are said to be “sediment sinks”

ESTUARIES Distribution = common & worldwide Size = varies Depth = varies from shallow (coastal plains) to deep (fjord) biological significance: highest productivity in the world! nutrients from land runoff (rivers) shallow enough for photosynthesis well mixed by tides for good distribution of oxygen home of many organisms (very diverse and abundant life) “nursery” for many open ocean organisms, e. g., shrimp, many fish. Processes tides tend to be the dominant physical environmental factor waves are locally important (especially in large estuaries with long fetches) bioturbation by invertebrates tends to homogenize subtidal sediments Sedimentation rates are significant Duration = 100’s to 1000’s years, not tens of thousands to millions

ORIGIN OF MOST ESTUARIES

TECTONIC ESTUARIES San Francisco Bay is formed by three major faults. This “structural” bay is the site of the cities of Oakland and San Francisco - a recipe for disaster!

FJORDS Fjord type estuaries were carved by glaciers that flowed down valleys to the sea.

DROWNED VALLEYS Coastal plain river valleys are drowned by rising sea levels, forming estuaries.

CONSTRUCTIONAL ESTUARIES Formation of an estuary behind a spit, bar or barrier island

TYPES OF ESTUARIES a) stratified (isohalines almost horizontal) b) well-mixed (isohalines nearly vertical) c) partially mixed (isohalines oblique)

END OF FILE

GENERALIZED COASTAL ECOSYSTEM MODEL RIVERS NUTRIENTS SEA SUNLIGHT SEDIMENTS PRODUCERS CONSUMERS DECOMPOSERS