EOSC114 Homework: Waves and Tsunami

EOSC114 Homework: Waves and Tsunami Student ID:___________________ This exercise is a mixture of short readings and questions aimed at learning goals in the Waves Module associated with tsunami and shoreline or coastal hazards. After completing the exercise, you should be better able to … 1. Compare levels of risk due to tsunami at Richmond, Vancouver’s north shore and Vancouver Island’s Capital Regional District (CRD) between Port Renfrew, Victoria and eastern Saanich Peninsula. 2. Identify and apply the evidence that lead to those risk-assessment conclusions. 3. Use summarized data in a technical report about potential tsunami effects in the CRD to compare anticipated timing and changes in water levels and flow speeds at several locations in the CRD. 4. Characterize briefly a fourth style of scientific writing, namely technical reports written by scientists or engineers that were commissioned by decision-makers. 5. Identify shoreline protection facilities (jetties, breakwaters, groins, seawalls) and longshore drift directions. Instructions: 1. You will need to access web resources including reports, websites and maps, so be sure you have an internet connection available when you are working on this worksheet. 2. As for all other homework, work with this worksheet FIRST. Go online to transfer your results only AFTER you have completed the worksheet. You are not given enough time on Connect to complete all the work while the Connect “data entry” quiz is open. 3. Some references are rather long and may appear technical. BUT – just like for landslides – we will point you to the specific components of those readings. 4. You might never have heard of some places referred to in this homework. Therefore, please use to find out where they are. 5. There are two maps given at the end of this worksheet. Use them to help identify locations. 6. NOTE: Never rely on previous versions of homework because this one will not be the same. Step 1: some orientation questions based on the maps provided and Google Maps … Use google maps to find these straight-line distances you will need later. NOTE: Search for these places in Google maps; they should be easy to find. Be sure to read distances at the end of Goggle’s distance line, not from numbers in the middle of that line. (Steps for using google maps “measure distance” facility are outlined at o Straight line distance along the Strait of Juan de Fuca between the entrance of the Port Renfrew bay (Port San Juan) and the Sooke Harbour entrance. Distance in kilometers (round to nearest km): _____66.55____km o Straight-line distance of a helicopter flight between downtown Vancouver and downtown Victoria. __96.41______ o Straight-line distance between Port Angeles (south across the Strait in WashingtonState) and Victoria harbour entrance. ____34.20 Km____ o In order to familiarize yourself with our area of interest, find the following six places on that map and label them in order from 1 for MOST vulnerable to 6 for LEAST vulnerable, should a tsunami arrive from the Pacific Ocean west of the map. Enter initial guesses first because this will start you thinking about possible affects of tsunami at these locations. We will revisit this question after working through more of this exercise. NOTE: order from MOST=1 to LEAST=6. • Sooke _____ • Port San Juan (Renfrew) _____ • Nanaimo _____ • Victoria _____ • Sidney _____ • Pachena Beach (in the Pacific Rim National Park) or Bamfield (a marine sciences centre used by UBC and other researchers and students) _____ Step 2: Compare hazard levels at North Shore, Richmond, Victoria, Port San Juan. The following websites will quickly provide information necessary to answer the next 3 questions. • • • o From the public hazards information site for the City of Richmond, BC (some of you live there!), what level of risk from tsunami hazards is identified? • There is at zero or “not significant” risk • The town/city/region is at “low” or “slightly vulnerable” risk • The town/city/region is “a vulnerable area” or “at risk”. • The town/city/region is at “severe risk”. • From the public hazards information site for the city of Colwood (adjacent to Victoria) what level of risk from tsunami hazards is identified? (Same options) The town/city/region is at “severe risk”. • From the public hazards information site for the Alberni Clayoquot Regional District what level of risk from tsunami hazards is identified? (Same options) __________ The town/city/region is “a vulnerable area” or “at risk”. o ………………………………………………..CONTINUED…………………………………………………………