Module 4: Analysis of Historic Tide Levels (1915 to 2013) and Predictions through Student Name: John Doe James Section 01: 10:00 to 11:00, Fall 2014

Geologic and Geographic Comparison of Selected Sites City or Region & CountryDate Range of Tide RecordsGeographic and Geologic Setting Location 1: Victoria British Colombia, Canada Pacific Coast of North America Data from January 1910 to January 14, 2012; Data is 91% complete. British Columbia is located along an emergent coastline and in an active continental margin near the Juan de Fuca tectonic plate where it subducts beneath the North American Plate. British Columbia is also a formerly glaciated terrain that is experiencing some glacial rebound Location 2: AAA Location 3: BBB

Geologic Setting of Location 1: Victoria, British Columbia Juan de Fuca Plate North American Plate Subduction Zone Pacific Plate

Analysis of Tide Hydrograph for Location 1: British Colombia, Canada Facts: In this hydrograph, the highest tide levels on record were in excess of 400 mm above mean sea level (4 meters). 3 of the 4 highest tides (circled) have been in the last 3 decades. These occurred in 83, 97, & The previous highest tide occurred in The lowest tidal levels (1 meter below mean sea-level) occurred in 1945, 1965, 1973, All of these are at least 4 decades old. Gaps existed from which coincided with great depression in the U.S. Inferences: Cyclic sea-levels are observed on different time scales – maybe tied to El Nino events that we already learned have impact the west coast on a decadal scale. The trend of all data points over the long- term is positive. Thus sea-level is rising at this site. The equation for the trendline is provided. Sea-levels on average have risen about mm in 100 years despite the fact that this is a formerly glaciated coastline that is experiencing glacial rebound.

Insert Google Earth Screen Shot and Label at least 3 key geologic/geographic features Geologic Setting of Location 2: AAA

Location 2: Facts: Inferences: Hydrograph for Location 2 Here

Insert Google Earth Screen Shot and Label at least 3 key geologic/geographic features Geologic Setting of Location 3: BBB

Location 3: Facts: Inferences: Hydrograph for Location 3 Here

Composite Graph: Analysis of All Sites Facts: Which sites show positive sea-level change? Which sites show negative sea-level change? Similarities in the data How are the rates similar? Any differences in the data? How do the geologic/geographic settings compare? Discussion and Conclusions: What does your analysis of these three sites indicate about sea-level change? How do your selected sites compare to the sites selected by your classmates? Any similarities? Dissimilarities?

Final Conclusions Qualitative: describe what site 1 data says describe what site 2 data says describe what site 3 data says describe what composite data says Quantitative: E.G. Sea-level is projected to rise by XXX mm /year at Sites 1 and 2, but is projected to fall by XXX mm/year at Site 3. By 2042, sea-levels are predicted given past trends to be at 300 mm above mean seal level, which is a rise of 115 mm from modern sea-level.

Acknowledgments / Data Sources / Citations