Blue Science Exam
7 @ 4 points
Short answer (3/4)
3 @ 8 points
4 @ 12 points
No Authorized references.
You have choices. Use them wisely,
and insure you understand the questions you choose to answer.
Diagrams: These should clearly indicate understanding
of the procedures and concepts involved, and should be well thought out with
appropriate terms and details to support your answer. You must answer four of
the five questions.
Short Answer: The questions should be answered with
several sentences (no more than a short paragraph). You must answer four of the
Budget your time. Do not leave anything blank, and
note that I am looking for an understanding of the important concepts and
appropriate use of terminology.
All work on this exam is
individual. You may not any materials (books, notes, computers, etc.), and you
may not use IM, texting, talking, or any other means to communicate with other
individuals. If you are caught with an electronic device that is not turned
off and inaccessible you will get a 0 on the exam.
Define 7 of the 12
terms. You should have 2 sentences for each, and clearly define what the term
means, and then explain why it is important in the context of searching for
investigating shipwrecks. Because you have a choice, I expect very high
quality on your answers, so select terms on which you can shine.
3. Induced versus
7. Dry monsoon:
8. Along track
9. Monte Carlo
10. 1500 m/sec
11. Single beam
Insure that you only answered 7 definitions.
Short answer. You must answer 3 of the 4 questions
How does a lead line work, and how effective is it?
How can we use a satellite to measure depths in the ocean?
What are the tradeoffs from this method, and is it sufficient when we must find
a lost object like the MH370 aircraft?
What does a magnetometer measure, and what can we locate
with it? Would it be better for a steel warship or an aluminum aircraft?
Would you get better results using an aircraft or towing it behind a ship—give
one reason why you might prefer each.
Differentiate 2.5 D and 3 D data sets, how they might be
collected and used in a marine survey, and how they would be displayed
Insure that you answered 3 of the 4 questions in this
Answer 4 of the 5 diagrams.
This image shows a side scan sonar image.
Can you tell which way the ship moved? Why or why not?
What factors determine the strength of the return measured
by a sidescan sonar, and what will produce the strongest return for each
Discuss two things you can see in the image.
These are three views of shipwrecks, all in deeper water
than divers can comfortably operate.
was likely used, how does it work and why is that technology appropriate? What
does it tell us about the ship?
coordinates are different in the three views. Does that mean we have more than
one shipwreck depicted? Why or why not? What is different in the three views?
This map shows a search for a lost object in the ocean.
Can you tell what kind of sensor was deployed just from the
search pattern? What do you think might have been used (give at least two
examples), and which do you think is more likely? Insure that you discuss the
major features you see, and include appropriate terminology.
map shows a calculated drift for a ship, with three different motions modeled
in different colors and a resultant in red. Discuss what you think the motions might be, and what
color might go with each. Which motion is most important, and which least important,
to determine a search area, and why do you say that?
The map above shows the routes on a Dutch ship on 3˝ round
trips between Amsterdam and the Dutch colonies in what is now Indonesia during
the 1840’s, using purple symbols.
One map shows
wind vectors in January, and the other for August. Which map is which, and how
could you tell?
route used to go to the Indies, and indicate why they used that route.
of the route do you think provided the biggest challenges for them? What in
the wind patterns supports this, and do the recorded positions almost match
the positions recorded in the logbooks and shown on the maps, do you think
there is any difference in the accuracy of the latitudes and the longitudes? Why
do you think this?
If this had
been British ships going to India instead of Indonesia, do you think they would
have followed the same or different routes? Why or why not?
starred in Captain Phillips, about an act of piracy that took place in April
2009 in the NW Indian Ocean. Does the seasonality depicted in these maps
affect 21st century piracy?
Insure you answered 4 of the 5 diagrams.