Geology & Earth Science › geol4048 › pdfs › 15_earth_sciences.pdf · 2016-04-12 · Geology &...
Transcript of Geology & Earth Science › geol4048 › pdfs › 15_earth_sciences.pdf · 2016-04-12 · Geology &...
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Geology & Earth Science
• Geology is the science that pursues an understanding of planet Earth. Traditionally divided into two areas: physical and historical.
• Earth System Science is the science that studies the whole Earth as a system of many interacting parts and focuses on the changes within and between them.
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Book Topics based on geology, geomorphology and soil science• Photogeology
• Drainage Patterns
• Lineaments
• Geobotany
• Direct Multispectral Observations of Rocks and Minerals
• Photoclinometry
• Band Ratios
• Soil and Landscape Mapping
• Integrated Terrain Units
• Wetlands Inventory
• Radar Imagery for Exploration
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BUT, THE EARTH SYSTEM IS MUCH MORE…
Atmosphere: The mixture of gases that surrounds the Earth (Ex. N, O, Ar, CO2, and water vapor).
Hydrosphere: The totality of the Earth’s water, except the water vapor in the atmosphere.
Geosphere: The solid Earth, composed principally of rock and regolith.
Biosphere: All of the Earth’s organisms.
Anthroposphere: = Human activites.
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Aqua
Terra
TRMM
SeaWiFS
Aura
Meteor/
SAGE
GRACE
ICESat
Cloudsat
Jason
CALIPSO
GIFTS
SORCE
NOAA/
POES
Metop
GOES
MTSAT
MSG
TOPEX
Landsat
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0.1%
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Drainage Patterns: Dendritic, Trellis, and Rectangular
Jensen, 2000
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Drainage Patterns: Parallel, Radial and Centripetal, Annular
Jensen, 2000
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Drainage Patterns: Dichotomic, Braided, and Anastomotic
Jensen, 2000
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Deltas
Irrawaddy River
Delta, Burmah
Niger River Delta, AfricaMississippi River Delta, U.S.
Nile River Delta, Egypt
Jensen, 2000
bird’s foot
deltalobate
delta
lobate
delta
crenulate
delta
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MISSISSIPPI RIVER DELTA WITH MODIS
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OrinocoRiver
AmazonRiver
SeaWiFS SensorAugust 2004
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Añasco RiverIKONOS
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It is the part of the Earth's surface that remains perennially frozen. Itincludes glaciers (10% of Earth’s land surface), sea ice and vast areas offrozen ground (20% of Earth’s land surface) that lie beyond the limits ofglaciers. Thus, nearly a third of the Earth’s land area belongs to thecryosphere.
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Alaska Aleutian Islands from MODIS
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Mt. Everest with IKONOS
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Himalayas from ASTER
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WHITE SURFACE
High Reflectionof Light
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Atlantic Ocean
Caribbean Sea
Gulf of Mexico
Southern Ocean
Southern Ocean
Indian Ocean
Pacific Ocean
Arctic Ocean
Arabian
Sea
Mediterranean
SeaPersian Gulf
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Banda Largo de Onda
1 412
2 443
3 490
4 510
5 555
6 670
7 765
8 865
Fitoplancton Chl-a
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Banda Largo de Onda
1 0.58-0.68
2 0.72-1.10
3 3.55-3.93
4 10.5-11.5
5 11.5-12.5
SEA SURFACE TEMPERATURE (SST)
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• 36 bandas del visible al infrarojo
• Resolucion Espacial
– 250 m (bandas 1-2)
– 500 m (bandas 3-7)
– 1000 m (bandas 8-36)
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TemperaturaSuperficialDel Oceano
Clorofila-aDe
Fitoplancton
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OTG radars at UPRM NWS Nexrad
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L-BAND ANTENNA
NOAA 12/14
Band Wavelength (mm)
1 0.58-0.68
2 0.72-1.10
3 3.55-3.93
4 10.5-11.5
5 11.5-12.5
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http://www.goes.noaa.gov/browsh2.html
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Major dust storms are most frequent in arid and semiarid regions that are concentrated in the subtropical high-pressure belts north and south of the equatorial zone. Arrows show the most common trajectories of dust transported during major storms.
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4 BY-simple cells (prokaryotes)
3 BY-photosynthesis
2 BY-complex cells (eukaryotes)
1 BY-multicellular life
600 MY-simple animals
570 MY-arthropods (ancestors of insects, arachnids and crustaceans)
550 MY-complex animals
500 MY-fish and proto-amphibians
475 MY-land plants
400 MY-insects and seeds
360 MY-amphibians
300 MY-reptiles
200 MY-mammals
150 MY-birds
130 MY-flowers
65 MY-since the non-avian dinosaurs died out
200,000 years since humans started looking like they do today.
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Normal Fault Along the Wasatch Mountain Range in
Utah as Recorded on Landsat Thematic Band 4 Imagery
Springville Spanish Fork
Wasatch
Fault
Spanish
Fork River
Wasatch
Fault
Wasatch
Mountains
Jensen, 2000
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SAN ANDREAS FAULT
SPOT Image
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Landsat Thematic Mapper Image of the
Intersection of the San Andreas and Garlock Faults
Landsat band 4 image Shaded relief map derived from
a digital elevation model
San Andreas
Fault
Garloc
k Fault
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MOVEMENT OF WORLD PLATES ACCORDING TO GPS STUDIES
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PLATESBOUNDARIES
SEISMICACTIVITY
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Using InSAR we are able to map active ground displacements. This geodetic method uses two or more synthetic aperture radar (SAR) images to generate maps of surface deformation or digital elevation, using differences in the phase of the waves returning to the satellite or aircraft.
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Detecting Earthquakes
with SatelliteImages obtained from satellite
radar contained two important
information. Information is
power transmit beam in the
form of phase and amplitude,
which is influenced by the
number of waves emitted and
reflected back. At the time of
the wave emitted performed
phase measurements. In the
images obtained from each
pixel, will have two
information. The intensity of
the signal can be used to
determine the characteristics
of a material that reflects the
wave, while the wave phase is
used to determine whether
there has been a movement
(deformation) on the surface
of the reflecting wave.
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PLATE BOUNDARIES
SEISMIC ACTIVITY
WORLD'S VOLCANOES
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Cleveland Volcano at Aleutian Arc, Alaska
ISS- Digital Camera
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Panchromatic Stereopair of the Menan Butte Tuff Cinder
Cone Volcano in Idaho Obtained on June 24, 1960.
Jensen, 2000
Pyroclastic material volcano
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Composite Space Shuttle
SIR-C/X-SAR image
(bands C, X, L) of
Kilauea Hawaii volcano
on April 12, 1994
SIR-C image overlaid on a digital elevation
model. Overland flow of lava on the shield
volcano is evident.
Kilauea
caldera
Pu’u O’o
crater
Kilauea
caldera
Pu’u O’o
crater
Jensen, 2000
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Three-dimensional Perspective View of Isla Isabela of the
Galapagos Islands Obtained by the Space Shuttle SIR-C/X-SAR
(draped over a digital elevation model)
lava flow
pa’hoehoe lava
Jensen, 2000Extruded lava dome (shield) volcano
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IKONOS IMAGEOF MAUNA KEA
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Sulfur Dioxide (SO2) Ash and Aerosols
These false-color images are from the June 16, 1991 eruption of Mt. Pinatubo, Philippines.
The gas and ash clouds were tracked by TOMS for several weeks as they encircled the
Earth. These satellite observations demonstrate the enormous amounts of gas and ash
emitted, as well as details such as differences in peak concentrations and geographic
extent. TOMS also detects many smaller volcanic clouds
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-Began erupting on July 18, 1995-Dome collapse on June 25, 1997-An ash cloud erupted from the Volcano on October 27, 1999
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2011 Arctic ozone hole
The OMI instrument (onboard Aura Satellite)can distinguish between aerosol types, suchas smoke, dust, and sulfates, and measurescloud pressure and coverage, which providesdata to derive tropospheric ozone.
Visible: 350 - 500 nm
UV: UV-1 = 270 to 314 nmUV-2 = 306 to 380 nm
A combination of extreme cold
temperatures, man-made chemicals and
a stagnant atmosphere were behind
what became known as the Arctic ozone
hole of 2011, a new NASA study finds.
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SO2 concentration over the Sierra Negra Volcano from October 23-November 1 measured by OMI
On October 22, 2005, one of thesix volcanic summits on IslaIsabela in the GalapagosIslands archipelago beganerupting. The Sierra NegraVolcano continued to emit ashclouds and lava through the endof the month, before apparentlyquieting down around October31. The volcanic emissionscontain sulfur dioxide gas,which mixes with water vaporin the air and turns into veryreflective sulfate aerosolparticles. During largeeruptions, volcanoes emitenough sulfur dioxide that theresulting haze of sulfateaerosols can cool the climate byreflecting incoming solarradiation back into space. TheSierra Negra eruption spread avolcanic haze across the PacificOcean for several hundredkilometers.
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IKONOS IMAGEOF GRAND CANYON
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Landsat Thematic Mapper Color Composites
of a Portion of the Grand Canyon
TM Bands 7,4,2 (RGB)TM Bands 4,3,2 (RGB)
Jensen, 2000
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Grand Canyon on the Colorado River in Arizona
Landsat TM
Band 4
Digital
Elevation
Model
Shaded
Relief Map
Slope
Map
Jensen, 2000
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• Identify rock types and minerals
• Map concentrations
• Estimate contributions at the sub-pixel
scale
• Map physical parameters such as grain
size or water content
• Map indicators of soil quality
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• Mineralogical composition and
concentration
• Petrology, identification of rock types
• Physical parameters : grain size, water
content, and others
• % cover
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• Composition => Specific absorptions
• Physical parameters => scattering =>
general shape (continuum), shape of
absorptions
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• Coarse grain= light travels longer
– Absorption
• Fine grain= multiple reflexions inside
grains and at the interfaces
– Scattering
• BUT scattering intensity depends on the relationship
between grain size and wavelength
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• Well localized specific absorptions
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• Developed by the
USGS
• Identifies materials by
comparing a remotely
sensed observed
spectrum (the
unknown) to a large
library of spectra of
well-characterized
materials
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Mineral Maps of
Cuprite, NV, Derived
from Low Altitude
(3.9 km AGL) and
High Altitude (20 km
AGL) AVIRIS Data
obtained on October
11 and June 18, 1998
Hyperspectral data were
analyzed using the USGS
Tetracorder program.
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Read Chapter 18 and answer the review questions 1, 4, and 10 (at the end of the chapter).