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 these
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 and
cross track and along track:
3. Relate 1500 m/s to
Layback and Leeway
6. Multi beam
7. Curie temperature
8. 2.5D versus 3D
9. Noon fix or
Insure that you
only answered 7 definitions
Short answer. You must answer 3 of the 4 questions
How does singlebeam bathymetry work?
How can we use gravity to measure bathymetry, how much
detail can it reveal, and why is it frequently the best data we have in the
What does a magnetometer measure, and what can we locate
with it? What difference does sensor height have on the final results? Would
you get better results using an aircraft or towing it behind a ship—give one
reason why you might prefer each.
Relate the Curie temperature to permanent (or remnant
magnetization) and induced magnetization, and which would be more likely to be
useful to looking for iron cannon.
Insure that you answered 3 of the 4 questions in this
Answer 4 of the 5 diagrams.
What kind of instrument collected this data? How is it employed, and how is
the image collected?
Can you tell which way the ship moved? Why or why not?
What do the colors represent, and what controls the color
2. Map A shows the route of ship UK-1534 in the fall of
1802, with two voyages 1 and 2 in the northwestern Indian Ocean. One voyage is
during September, and the other in latest November and early December. Maps B
and C shows climatological wind vectors in September and December.
What causes the
dramatic change in the winds between these two months?
Which map, B or
C, is for September and which is for December, and how can you tell?
Which route, 1
or 2, is for September and which is for December, and how can you tell?
(this is part
of figure 2) Maps D and E show modern piracy in the same part of the Indian
Ocean, during the months of August and December. Can you identify which month
is which? Do the pirates respond differently than the merchant sailing ships
of the 18th and 19th centuries?
3. Maps A and B show two marine surveys. Notice that the
scales differ on the maps. Contrast the two searches in terms of the
Can you speculate on why the searches are different?
4. Map A shows a drift model for a ship in the ocean.
There are three colored vectors (blue, green, and orange), and a resultant in
red. What do the three vectors represent, and why did you make those
Map B shows a black trapezoid. What does it show, and why
would it be done?
Map C shows a number of colored points. How were they generated,
and what do they show?
5. These three figures all represent depictions of the
same data set.
How can we
collect this data?
When in the
process of searching will this technique be used, and why is it valuable then?
What is the
difference in the three depictions?
Insure you answered 4 of the 5 diagrams.