Christy Garvin, June 2, 2005

NOAA Teacher at Sea
Christy Garvin
Onboard NOAA Ship Rainier
June 1 – 8, 2005

Mission: Hydrographic Survey
Geographical Area: Aleutian Islands, AK
Date: June 2, 2005

Seafloor mapping
Seafloor mapping

Weather from the Bridge

Latitude: 56 deg 59 min N
Longitude: 135 deg 17 min W
Visibility:12 nautical miles
Wind Direction: 275 deg
Wind Speed: 10 kts
Sea Wave Height: 1-2 ft
Swell Wave Height: 0 ft (we are in a protected bay)
Sea Water Temperature: 54deg F
Sea Level Pressure: 1016 mb

Science and Technology Log 

Each evening aboard the RAINIER a POD, or plan of the day, is posted to inform all hands of the work scheduled for the following day. The POD for today, Thursday, June 2, showed that work would officially begin at 0800.  Two launches were to be deployed in order to run survey lines; I was assigned to launch RA4 working near Sitka and off Baranof Island. Running survey lines is one of the most important tasks accomplished by the RAINIER.  Since the ship’s scientific mission is hydrography, or charting of the ocean floor, the running of these lines is a major part of accomplishing that task.

Survey transects
Survey transects

Before the launches can actually run survey lines, there is a lot of preparation that takes place behind the scenes in the plotting room.  Here, each area to be surveyed is subdivided into smaller plots and placed on survey sheets to make large areas more manageable.  Then, a survey technician pulls existing nautical charts of the area and uses previously obtained depth information to determine where and how far apart to space the survey lines. In order to ensure 100% coverage of the ocean floor to the 8-meter mark, survey techs multiply the depth in fathoms (a fathom is 6 ft) by 5 to calculate the meters of line spacing.  For example, if a launch is working in an area that is 7 fathoms deep, then the amount of space between the survey lines in that area would be 35 meters apart. The closest any lines are drawn is 25 meters apart.

Once the distance between lines has been established, the survey tech draws the lines on a map of the area.  Lines are drawn parallel near the shoreline since close lines are necessary to achieve 100% coverage. Further from the shore, lines can be drawn in any direction, but they are usually drawn parallel to each other for ease in running the lines.  These maps are taken out on the launches and entered into a specialized computer program that helps the launch find and follow the survey lines that have been drawn.

Personal Log 

One of my favorite activities today was having the chance to drive the launch during a man overboard drill.  I’m sure the life preserver in the water (our man overboard) breathed a huge sigh of relief that it wasn’t run over by the crazy coxswain (driver) at the helm.

Question of the day: What is a CTD? 

Previous question of the day: What is hydrography and why is it necessary? Answer: Hydrography is the charting of the ocean floor. It is necessary because many ships use the information on the charts to ensure safe passage through narrow or shallow channels. Many of the old charts contain data that is very old or that was obtained by unreliable methods.  It is important that charts are updated so that ships are able to pass through these areas safely.

Christy Garvin, June 1, 2005

NOAA Teacher at Sea
Christy Garvin
Onboard NOAA Ship Rainier
June 1 – 8, 2005

Mission: Hydrographic Survey
Geographical Area: Aleutian Islands, AK
Date: June 1, 2005

Christy Garvin, learning the ropes
Christy Garvin, learning the ropes

Weather from the Bridge

Latitude:  56 deg 59 min N
Longitude: 135 deg 17 min W
Visibility:  12 nautical miles
Wind Direction: 285 deg
Wind Speed:  15 kts
Sea Wave Height:  1-2 ft
Swell Wave Height:  0 ft (we are in a protected bay)
Sea Water Temperature:  51deg F
Sea Level Pressure: 1022.5 mb

Science and Technology Log 

Due to the Memorial Day weekend, today was the RAINIER’s first operational day since I arrived in Sitka, Alaska. Sitka is located off the western coast of Baranof Island and is surrounded by snow-covered mountains.  The weather has been sunny with temperatures around 55 deg F. Currently, the RAINIER is anchored in the Aleutkina Bay, which is just south of Sitka.

Because several interns and new hands joined the crew for this leg of the journey, the CO, or Commanding Officer, declared today a stand down day.  Basically, this meant that normal work operations were suspended so that the entire day could be devoted to training. A large part of our training was concerned with the deployment and recovery of small boats called launches.

The launches are stored on a system called the gravity falls davit.  The system was originally designed for emergency boat deployment and is capable of working without any electricity; by lifting a lever and removing a small pin, the weight of the boat will cause the davit to slide down the track and drop the boat in the water.  Although this works well in emergency situations, it causes a great amount of stress and strain on the equipment.  Therefore, this method is not used for the daily deployment of the launches.  Instead, a somewhat more complicated process requiring a team of ten or more people is used to safely put the boats in and out of the water.

The first step in deploying the boats is to unplug the boats from the main ship and loosen the gripes that secure the boat.  Once the boat is no longer constrained, a team of four people standing on the deck below grabs ropes called frapping lines and helps stabilize the boat as it is lowered down to the deck level by a controller allowing the davit to slowly descend. Once the launch has reached the main deck level, a survey team boards the launch with all of their equipment.

At that point, one member of the survey team sits on the bow of the boat while another stands on the stern. Their job is to help detach the chain falls (a hook with an attached shackle) from the padeyes (a horseshoe shaped attachment bolted to the deck).  This detachment occurs after the boat is slowly lowered into the water by a controller using a winch drum.  Throughout the entire process, the boat is continually stabilized by the four linesmen who provide or remove slack from the frapping lines.  The deck crew and survey teams have practiced this process many times, and the process is quick and efficient when run by an experienced crew.

However, it was much less graceful as all of the new hands took their turns on deck; ropes ended up in the water, the launches bumped the ship a few times, and hooks didn’t quite catch the padeyes; but by the end of the day all of the new hands were feeling much more confident in deployment and recovery of launches.  It was an excellent opportunity to learn and practice new skills that will be used each day as survey teams are sent forth to accomplish the hydrography mission of the RAINIER.

Personal Log 

I really enjoyed learning how to tie different types of knots and handle line today.  Working as a linesman is very intense because someone could be seriously injured if you fail to do your job properly. The teamwork aspect is so important to safety as the launches are deployed, and I am having a great time actually being involved in the procedures that take place on the ship.

Question of the day: What is hydrography and why is it necessary? 

Melissa Fye, April 22, 2005

NOAA Teacher at Sea
Melissa Fye
Onboard NOAA Ship Hi’ialakai
April 4 – 25, 2005

Mission: Coral Reef Ecosystem Survey
Geographical Area: Northwest Hawaiian Islands
Date: April 22, 2005

Location: Latitude: 23*36.3’North, Longitude: 164*43.0’W

Weather Data from the Bridge
Visibility: 10
Wind Direction:90
Wind Speed: 14 knots
Sea Wave Height: 2-4 feet
Swell Wave Height: 5-7 feet
Sea Level Pressure: 1018.8
Cloud Cover: 2/8 Cu, As, Si
Temperature outside: 24.4

Science and Technology Log

At 0500, surveying of the ocean floor was concluded and transit to Honolulu began.  Scientists in the lab compiled more data and finished up the survey trip with a benthic habitat map of the French Frigate shoals. There are still a few bits of editing to do on the map and some borders need to be added to the final form, but overall it is complete. Scientist Joyce Miller showed me an overview of the completed work using Fladermouse, or a computer mouse, that gives an onlooker the view a bat would have flying over the map. It is a 3-D view of the map, giving its operator the ability to zoom in on underwater pinnacles, sand waves, and coral reefs from any direction.  The contours of the ocean floor were very apparent and Joyce Miller commented that the AHI, new software, etc., enabled the scientists to create the final product much faster; this being the first time they had all the data compiled into map form before the end of a cruise. It was exciting to see all the surveying work put into one picture. With surveying complete for this cruise, and much of the editing done, scientists and crew spent the day doing laundry, finishing up tidbits of work, watching the sunset, etc. The HI’IALAKAI is expected to arrive in the University of Hawaii’s port by 0800, Saturday, April 23, 2005.

Personal Log

I spent the day answering the last of the emails from students, printing off previously completed emails and logs, and snapping pictures of the ship and persons aboard.  Scientists showed me completed benthic maps in the lab and I began packing up my things. It has been a terrific experience and I was lucky to be onboard with such hospitable people. I have truly enjoyed my time aboard the HI’IALAKAI and I have learned so much about ships, coral ecosystems, the Hawaiian islands, scientific data collecting, and those people on board this cruise.  I’m taking back to my classroom a wealth of resources like maps, charts, a binder of lessons, and many photographs and digital movies to weave into science lessons.  But more importantly than those things, I will be bringing back to the classroom real-life enthusiasm for the application of science in the real world.  I have experienced first hand, biological ecosystems, weather instruments and measurements, and map making, in a real life context. I want my students to know that life is not a collection of things, but a collection of experiences. I hope this trip (the resources and anecdotal stories I bring back to the classroom) encourages them to explore opportunities as they arise in their own lives. As a teacher, my underlying goal is to teach my students that learning should be a life long adventure!  And isn’t that what this trip is really all about? Even with all the pictures I have taken and emails I have written, no one will ever have an experience like I have had on board the HI’IALAKAI. Thank you to NOAA, CO Kuester, Lead Scientist Scott Ferguson, and everyone else I have encountered on this trip!

QUESTION OF THE DAY: There are “rivers” of water in oceans that are called currents.  What is name of the current that runs the entire length of the east coast? How does it affect people on the east coast?

ANSWER TO YESTERDAY’s Question:  CO Kuester (commanding officer) has given commands for the ship to arrive at the entrance to Honolulu Harbor by 0700 on Saturday, April 23rd. The ship has 260 nautical miles to still cover, and we travel ten knots an hour.  1) How many hours will it take us to reach our destination? 26 hours 2) A nautical mile > a statute mile (mile on land)  if…

1 nautical mile (1 knot) = 1.15 statute miles  then… 260 knots = 299 statute miles

Melissa Fye, April 21, 2005

NOAA Teacher at Sea
Melissa Fye
Onboard NOAA Ship Hi’ialakai
April 4 – 25, 2005

Mission: Coral Reef Ecosystem Survey
Geographical Area: Northwest Hawaiian Islands
Date: April 21, 2005

Location: Latitude: 23*36.3’North, Longitude: 164*43.0’W

Weather Data from the Bridge
Visibility: 10
Wind Direction:90
Wind Speed: 14 knots
Sea Wave Height: 2-4 feet
Swell Wave Height: 5-7 feet
Sea Level Pressure: 1018.8
Cloud Cover: 2/8 Cu, As, Si
Temperature outside: 24.4

Science and Technology Log

The HI’IALAKAI continued running survey lines of the ocean floor near Nihoa. Scientists continued grouping together larger swaths of data in the drylab, like pieces of a puzzle emerging from the depths of the ocean. We cruised by Nihoa several times collecting benthic data.

Personal Log

I began the day answering emails from students and teachers. I edited a file of data in the drylab and flitted about taking pictures of people and places on board. The cruise is beginning to wind down, so there isn’t as much to do at this point and no boats are being deployed either. I must admit my stomach is a little upset from the rolling and pitching of the boat. I sleep terribly one night, then like a rock the next.

QUESTION OF THE DAY: CO Kuester (commanding officer) has given commands for the ship to arrive at the entrance to Honolulu Harbor by 0700 on Saturday, April 23rd. The ship has 260 nautical miles to still cover, and we travel ten knots an hour.  1) How many hours will it take us to reach our destination? __________________ 2) A nautical mile > a statute mile (mile on land)  if…

1 nautical mile (1 knot) = 1.15 statute miles  then…       260 knots =____________ statute miles?

(thanks to Lt. Wingate and ENS Jones for help with this question!)

ANSWER TO YESTERDAY’s Question: I have seen many sea creatures around the Northern Hawaiian Islands coral reef ecosystem. Animals such as the whitetip shark,  sea turtles, and monk seals. These animals are all living things that eat other living things for energy. In a food web, they are called consumers.

Melissa Fye, April 20, 2005

NOAA Teacher at Sea
Melissa Fye
Onboard NOAA Ship Hi’ialakai
April 4 – 25, 2005

Mission: Coral Reef Ecosystem Survey
Geographical Area: Northwest Hawaiian Islands
Date: April 20, 2005

Location: Latitude: 23*36.3’North, Longitude: 164*43.0’W

Weather Data from the Bridge
Visibility: 10
Wind Direction:90
Wind Speed: 14 knots
Sea Wave Height: 2-4 feet
Swell Wave Height: 5-7 feet
Sea Level Pressure: 1018.8
Cloud Cover: 2/8 Cu, As, Si
Temperature outside: 24.4

Science and Technology Log

Early before daybreak we arrived at Nihoa island to conduct a CTD cast (conductivity, temperature, and depth measurements).  By three o’clock a.m., the HI’IALAKAI began running north/south and east/west survey lines of the ocean floor. The ship continued throughout the day, surveying the ocean floor using the multibeam system for benthic habitat mapping.

Personal Log

The trip is winding down and as the end approaches, I am finishing my interviews with the crew of the HI’IALAKAI.  I sent out word that I would take anything that anyone has to give away. Several of the officers and crew have been kind enough to give me CDs of past diving trips, maps, and photographs taken on board that I may have missed. I have been reading some of the weather and ocean resources aboard also. We did have an unexpected visitor aboard today. A four foot Wahu fish was caught on the chief steward’s fishing line and filleted for dinner. Its scales were a silvery blue/green color and it had rows of very sharp teeth. I’ve included pictures of it in this log.  I also concluded some interviews with other members of the scientific team. Information on scientists Scott Ferguson, Kyle Hogrefe, Emily Lundblad, Jonathan Weiss, and Rob O’Connor are included in this log.

Lead Scientist Scott Ferguson works for the University of Hawaii and acts as a contract scientist for NOAA. He is originally from Colorado and Tennessee and went to college in Boston. While in high school, he remembers becoming interested in oceanography and also recalls opening a National Geographic Magazine as an adolescent, which contained hand drawn maps of the ocean and may have subsequently planted the seed for his current specialization in benthic habitat mapping. He obtained a degree in biology, specializing in genetics, while an undergraduate student in Boston. His current assignment is based on grant work submitted by a group of scientists to collect data, based on the most available science, about the sea floor in the Northwestern Hawaiian Island chain. The data collected from this trip, which in turn will be made into maps, will be made available to any managers of the various resource management groups (including the Fisheries Department, state agencies, agencies which protect sea turtles, monk seals, etc.). Nautical charts available at this time are inadequate for use for management of resources in the area, so the multibeam sonar and the scientists aboard have been collecting much more detailed data about the ocean floor for these agencies.  The information gathered will determine fishing guidelines, etc., and will help determine boundaries for sanctuary designation of this ecological system. Mr. Ferguson finds this career interesting because it is not routine and provides opportunities for problem solving. The tool he uses most is the computer to collect data.  He comments that someone interested in this field of science should build knowledge through mathematics courses, computer classes, and be able to express themselves well through written medium. Persons who consistently pay attention to detail and are inquisitive are well suited to this work, according to Mr. Ferguson.  Mr. Ferguson and his wife, scientist Joyce Miller, will spend 3-4 months a year on assignment in the Pacific Ocean.  As an added side note, he, his wife, and their cat take up permanent residence on a boat when not working in the office or out to sea!

Marine Ecosystem Specialist, Kyle Hogrefe, spoke to me in an earlier log about the Ghost Net Project and marine debris trips he has taken part in. I took the time today to interview him more thoroughly about the work he does.  Mr. Hogrefe is originally from Medina, Ohio and obtained an undergraduate degree from the University of Colorado in environmental science.  He has worked as a debris specialist, fisheries observer in Alaska, and taken jobs related to data management and mapping to increase his knowledge base. His duties on this cruise involve the deployment and retrieval of oceanographic data platforms.  His job is important because these devices collect long term data about ocean currents, temperatures, etc. which may effect populations of aquatic species of plants and animals over time. Mr. Hogrefe comments that the best part of his job involves the sense of adventure, travel, and diving he gets to do. He comments images from childhood watching Jacques Cousteau may have led to his career choice.  He will spend roughly 6 months at sea this year and the drawbacks of his career involve time away from friends and family. The tool he uses most often is his brain to make decisions and a physical piece of equipment he utilizes often is a lift bag. Patience and an ability to put personal differences aside while working with colleagues are attributes one should possess; according to Scientist Hogrefe.

GIS (Geography Information Systems) scientist Emily Lundblad is originally from the state of Texas and has a master’s degree in Marine Resource Management. Her interest in mapping was sparked from a guest speaker who spoke at her high school. It is a very math/science oriented field and the computer is her most important tool.  She believes the best part of her job is the travel and the ability to see the application of her work. She enjoys going to sea to help collect the data, whereas she would normally just edit and process it. Miss Lundblad will take part in three cruises at sea this year to help collect mapping data.  She mentions that her job on land requires normal eight hour days, but time at sea is different , requiring 12 hour shifts.

Sea floor mapping specialist Jonathan Weiss is a Northern Virginia native, originally from Alexandria, and a graduate of William and Mary. His undergraduate degree is in Geology and he received a graduate degree in Marine Geology from the University of Hawaii. He comments that he has always been curious about the earth and its structure and that research on plate tectonics has revolutionized this field of scientific research. His job requires him to work on backscatter to process the imagery data about the sea floor texture and his most important tool is the computer.  He encourages anyone interested in this line of work to take lots of math courses and a broad overview of the sciences. He enjoys his first post graduate job because the hours are flexible enough for hobbies (like surfing), his bosses are encouraging, and he works with many people his own age. He will spend roughly four months at sea this year in the field.

Rob O’Connor, GIS specialist, originates from Texas but has spent most of his life in Maui, Hawaii. His educational background includes an undergraduate degree in Geography from the University of Hawaii. He comments that the computer is also his most important tool for his job and that he became interested in aspects of the earth after taking some introductory geography courses in college. His duties include data processing and cartography (map making). The travel is an added benefit for this line of work and Mr. O’Connor adds that a person should possess good interpersonal skills and computer knowledge to be successful in this occupation.  This is his first cruise of the year as a GIS specialist.

QUESTION OF THE DAY: I have seen many sea creatures around the Northern Hawaiian Islands coral reef ecosystem. Animals such as the whitetip shark,  sea turtles, and monk seals. These animals are all living things that eat other living things for energy. In a food web, they are called _______________________.

ANSWER TO YESTERDAY’s Question: Ms. Fye saw a humpback whale near the starboard side of the ship the other day. It was performing an adaptive behavior.  Fill in the blank to find out what adaptation the whale was performing.  The movement of an animal from one region to another and back again is called migration.