Research of Synchronized Cooperative GIS Based on Message

MODIS-Based Inner Mongolia Grassland Snow-Cover Mapping
Huishu Hou*a, Houyue Yang a, Xiumei Wangb
aCollege of Information Engineering, Inner Mongolia University of
Technology, Hohhot, China, 010051 bSchool of Energy and Power Engineering,
Inner Mongolia University of Technology, Hohhot, China, 010051
ABSTRACT
Inner Mongolia Autonomous Region is the largest animal husbandry production
base in China. It plays a very important role in China's economy. However,
most of Inner Mongolia grassland is located at high latitude and high
altitude regions where winter is long and weather is cold, snow disaster
occurred almost every year, resulting in a large number of livestock
deaths. The consequences of the snow disaster are serious. As a result,
monitoring the snow cover evolution has a significant social and economical
meaning for grassland snow disaster forecasting, snow disaster rescuing, as
well as the reconstruction of post-disaster recovery. For its advantages of
higher spectral resolution, higher temporal resolution, higher spatial
resolution and free-receiving policy, optical remote sensing sensor-MODIS
was widely applied to natural disaster dynamic monitoring areas, such as
flood ,drought, forest fire, grassland fire and snow disaster ,etc. The
application of MODIS to Inner Mongolia grassland snow cover monitoring and
extracting snow information is still a blank research area in China. The
MODIS L1B 500 meter resolution data were preprocessed by geometric
correction and eliminating bow-tie effects methods, then according to
normalized difference snow index algorithm and a comprehensive threshold
criterion, the processed MODIS image was used to extract large-scale snow
cover information and to produce snow-cover map of Inner Mongolia on late
January 2008. At last, verifying the accuracy of the snow-cover map by
official data issued by Inner Mongolia ecological and agro-meteorological
center. The result shows that the snow-cover map was accurate so that the
application of MODIS data to monitor large-scale snow cover is very
effective.
Groundwater Appraisal and Environmental Management of the Uma River Basin,
Akola District, Maharashtra
Syed Khadri*a, Ganapati Patilb, Rajan Zambrec aSGB Amravati University,
Enkayyapura, Opp. Rahman Layout, Beside reliance Tower, Camp, Amravati,
India 444602;
bThe Pennsylvania State University, Pennsylvania, PA United States 16802;
cErallo Technologies, Inc , MA United States, 01460
ABSTRACT
Detailed hydro-geological and hydro-geochemical investigations were
conducted on the Uma River Basin, Akola district, Maharashtra. The aim of
these investigations was to understand the hydro-geochemical, geological,
geomorphologic, and environmental control of the groundwater regime of the
region. The study area is characterized by the presence of an alluvial
tract and underlined by a horizontal sequence of lava flows. The area was
divided into simple and compound units based on their field characters,
textual parameters, and geomorphic expression. Major element chemistry of
groundwater samples from dug and bore wells at 125 selected sites on the
Uma River basin were analyzed during pre-monsoon and post-monsoon periods
to understand the groundwater quality and its impact on the environment. A
number of thematic maps showing the distribution of various elements and
their ratios, along with iso-contour maps of physico-chemical parameters,
were utilized to understand the water quality management of the region. In
this study an attempt has been made to demonstrate the application of GIS
based groundwater modeling along with sensor networking techniques in
identifying the hotspot geoinformatics for the sustainable water resources
management. The Application of Remote Sensing Technique to the Surveying of Active
Faults of the Hangzhou Area
ZHANG Wei, YANG Jin-zhong*
China Aero Geophysical Survey & Remote Sensing Center for Land and
Resources, Beijing, China, 100083 ABSTRACT It is important to explore the active faults in urban areas and their
surroundings for earthquake disaster mitigation. Satellite remote sensing
techniques can play an important role in active faults exploration. It can
not only express the panorama of active faults and active tectonics on a
macroscopic view, but also can monitor the occurrence, development and
rules of temporal-spatial evolution of active faults. In this paper, we
take the Hangzhou area as an example to introduce the treatment of
extracting concealed active faults information covered by thick Quaternary
unconsolidated sediment in detail, using the methods of image enhancement
and image fusion etc. to improve the definition and precision of satellite
images and presenting a three-dimensional (3D) model to show tectono-
geomorphic features along the relevant faults. At the same time, we
collected aeromagnetic anomaly data, shallow seismic exploration data and
dating data, and carried out field survey as much as possible to validate
the active faults based on remote sensing images. The result revealed that
the interpreted faults showed a high consistency with traditional
geological acknowledge. So it is feasible to explore the active faults in a
weakly active structural area by using satellite remote sensing techniques
and to contribute large engineering project and the research of
neotectonics.
The Application of Integrated GPS PPP/INS in Aerial Triangulation
Jianhong Fu
School of Remote Sensing and Information Engineering, Wuhan University, 129
Luoyu Road, Wuhan, China, 430079
ABSTRACT
The POS-supported aerial photogrammetry requires nowadays one or more GPS
base stations established in the surveying area to obtain synchronously the
differential measurements with airborne GPS receiver. In the post
processing, DGPS positioning and velocity determination with carrier phase
and Doppler measurements are adopted firstly to obtain 3D coordinates and
velocities. Then, the results of DGPS are integrated with IMU (Inertial
Measurement Unit) data to obtain precise position and attitude angles. This
operational model has high work cost and the project arrangement needs much
delicate consideration . It is quite difficult sometimes to establish
appropriate GPS base stations in some regions such as dense forests, desert
and mountainous region. With the appearance of GPS Precise Point
Positioning (PPP) technology, the integration of kinematic GPS PPP with INS
and its application in the aerial triangulation were proposed here. In the
paper, firstly, the algorithms of GPS PPP and its integration with INS were
introduced. The Kalman filtering in the integration of PPP and INS was
discussed in detail. Then, a great deal of actual aerial data were
processed with the algorithms proposed in the paper and the test results
were analyzed. In the test, the RMS of position residuals reached 0.2m and
the RMS of velocity residuals reached 0.05m/s respectively. Compared to the
integration of DGPS/INS, the integration of GPS PPP/INS showed systematic
error. However, in the final aerial triangulation, the accuracy of the
block bundle adjustment with the results from two models had no visible
difference if 4 or more 3D GCPs were deployed in the four corners of the
surveying area.
Detecting archaeological sites impacted by modern activity: a satellite
imagery investigation at Barton Ramie, Belize
Errin T. Weller*
Department of Anthropology, University of Colorado-Boulder, UCB 233,
Boulder, CO, 80309
ABSTRACT
High-resolution panchromatic Worldview-1 satellite imagery over the
archaeological site of Barton Ramie, Belize Central America, successfully
detected the remains of ancient Maya settlement. Surface archaeological
settlement has been largely destroyed due to extensive agricultural
activities. Maya remains and subsurface features resulted in four
identifiable anomaly types in the satellite imagery that were confirmed
through ground-truthing and site maps as settlement features. Geographic
Information System analysis and ground-truthing determined that mound
(archaeological remain) size is the primary factor enabling detection. The
height of mounds correlated with the rate of successful detection with a
threshold at 2m. The confirmation of features in a plowed environment has
implications for other disturbed environments in Belize and beyond
including settlement, survey, and population.
Keywords: Worldview-1 satellite, ancient Maya, Barton Ramie, agricultural
disturbance, archaeology Application of GIS-based Weights of Evidence Modeling to
metallogenic prediction
Changming Wang* a,b, Jun Denga, Shouting Zhang a , Qiuming Cheng a,b
aState Key Laboratory of Geological Processes and Mineral Resources, China
University of Geosciences, Beijing, China, 100083;
bDepartment of Earth and Space Science and Engineering, York University,
4700 Keele Street, Toronto, Canada, ON M3J1P3
ABSTRACT
On the basis of GIS technologies and weights of evidence modeling, MapGIS
is int