Hydrology
EESC
BC 3025
Field trip - Black Rock Forest (Shala,
Martin & Diane)
Saturday
"Old" forest headquarters (11-11:30)
- 9 am leave NYC on LDEO shuttle bus
- pick up equipment at Barnard and LDEO,
buy
lunch on the way
- 11:00 arrive at weather station, old
office
- take a GPS measurement at the station
(talk
about
GPS if time allows)
- collect GPS data at each location where you
work
- weather station
- how do the instruments work (Fig 1, 2, 3, 4, 5, 6, 7, 8, 9, 10)
- begin relative humidity measurements
Stream gauging near old head quarter & other measurements
(11:30-2:30)
- Group 1 wading through stream (red
tape
marking the trail)
taking flow measurements
- BRF wand discharge rates (Fig 1, 2,
3, 4, 5)
- BRF 03 measurements (Fig 1, 2,
3, 4)
- GPS measurements (Fig 1)
- briefly explain the YSI multi
parameter sensor, collect data on stream
- lunch
at old headquarters
- Group 2
- measure hydraulic head in both wells
(Fig 1,2)
- use of automatic pressure transducers
(Fig 1)
- pumping test
- pump experimental well (Grundfos) and
monitor water
table in both wells (Fig 1,2,3,4,5)
- monitor recovery of the water table
after
the shutoff
of the pump (Fig 1, 2,
)
- sampling the well for:
(Fig 1,2,3)
- conductivity, temperature, pH, O2
(Fig 1, 2)
- noble gases (Fig 1)
- filter water for chemistry sample
Stream gauging near old headquarters & Cascade Brook (2:30-5:30)
- Group 2 wading through stream (red tape
marking the trail)
taking flow measurements
- BRF wand discharge rates (Fig 1,
2,
3,
4,
5)
- BRF 03 measurements (Fig 1,
2,
3,
4)
- GPS measurements (Fig 1)
- briefly explain the YSI multi
parameter sensor
- Group 1 Education Center
- collection of samples for pH, O2, T, el.
conductivity, GPS from: Upper Reservoir, Aleck Meadow, Arthur's
Pond,
and Tamarack Pond (2 ponds per group)
(Fig 1,
2,
3,
4,
5,
6,
7)
Education Center (5-6)
- soil suction/moisture measurements,
vertical profile
- Relative humidity measurements
Sunday
Education Center and Forest 9-11, 11-1
- Group 2 Education Center
- collection of samples for pH, O2, T, el.
conductivity, GPS from: Upper Reservoir, Aleck Meadow, Arthur's
Pond,
and Tamarack Pond (2 ponds per group)
(Fig 1, 2, 3, 4, 5, 6, 7)
- Group 1
- measure hydraulic head in both wells
(Fig 1,2)
- use of automatic pressure transducers
(Fig 1)
- pumping test
- pump experimental well (Grundfos) and
monitor water
table in both wells (Fig 1,2,3,4,5)
- monitor recovery of the water table
after
the shutoff
of the pump (Fig 1, 2,
)
- sampling the well for:
(Fig 1,2,3)
- conductivity, temperature, pH, O2 (Fig 1, 2)
- noble gases (Fig 1)
- filter water for chemistry sample
- measurement of the relative humidity
as a
function
of time during the day
Education Center 11:30-1:30
- research/history @ BRF (BRF staff?) (Fig 1)
- brief outline of the Black Rock Forest (BRF)
history
- use of the reservoirs at BRF for domestic water supply
- what else is currently going on at BRF
- green building?
LDEO/NYC 2-4
- leave BRF at 1:30 pm
- make a quick stop at Cascade Brook on the
way out to look at stearm gauge
- drop off equipment at 3 pm
- if time allows, have a quick look at labs
at LDEO
- arrival in NYC before 4 pm
What to hand in (to be
modified)
- Summarize in paragraph the history and the current status of the
forest, see BRF
web site for information
- Type in data obtained in the field into a spreadsheet, start with
this file
- Put GPS positions of all activities on topo
map that I gave you
- Do the
positions make any sense (longitude, latitude, and elevation)?
- Determine the absolute humidity using your observations and the
water vapor saturation curve we discussed in class, plot relative and
absolute humidity as a function of the hour of the day.
- Calculate the discharge rate of the stream near the old forest
head quarter, analyze just the data from your group.
- Plot all pH measurements as a function of elevation (include
stream measurements, all reservoirs and the groundwater sample). Do you
have an explanation for the trends you see? For info on acid rain,
see: NADP.
- <><>Put YSI water quality measurements in a
table, just the final reading after equilibration was reached is
sufficient. Select one parameter (not pH) and plot it as a function of
elevation again. Do you see a trend and if so do you have an
explanation for it?
- <><>Write a few sentences about what you found
most interesting during our trip.
Equipment
- 2 GPS instrument
- YSI plus sensors & standards
- filter & syringes
- bottles (plastic, glass)
- submersible Grundfos pump controller
&
pump (on site)
- tools, adjustable wrench
- Leatherman
- some copper tubes, hoses
- digital camera
- water level tapes
- umbrella
<> levelogger & interface -
computer for data logger readout
- bucket (BRF)
- rubber boots
- waders (on site)
- flowmeter
- cell phone
- hygrometer
- papers, BRF history, GPS, maps
- plots of Cascade Brook data (I will put
some
of that
on the class website)
- chemests O2 tests
Resources
