Spatiotemporal characteristics of the Huangtupo landslide in the Three Gorges region (China) constrained by radar interferometry

The Huangtupo landslide is one of the largest in the Three Gorges region, China. The county-seat town of Badong, located on the south shore between the Xiling and Wu gorges of the Yangtze River, was moved to this unstable slope prior to the construction of the Three Gorges Project, since the new Three Gorges reservoir completely submerged the location of the old city. The instability of the slope is affecting the new town by causing residential safety problems. The Huangtupo landslide provides scientists an opportunity to understand landslide response to fluctuating river water level and heavy rainfall episodes, which is essential to decide upon appropriate remediation measures. Interferometric Synthetic Aperture Radar (InSAR) techniques provide a very useful tool for the study of superficial and spatially variable displacement phenomena. In this paper, three sets of radar data have been processed to investigate the Huangtupo landslide. Results show that maximum displacements are affecting the northwest zone of the slope corresponding to Riverside slumping mass I#. The other main landslide bodies (i.e. Riverside slumping mass II#, Substation landslide and Garden Spot landslide) exhibit a stable behaviour in agreement with in situ data, although some active areas have been recognized in the foot of the Substation landslide and Garden Spot landslide. InSAR has allowed us to study the kinematic behaviour of the landslide and to identify its active boundaries. Furthermore, the analysis of the InSAR displacement time-series has helped recognize the different displacement patterns on the slope and their relationships with various triggering factors. For those persistent scatterers, which exhibit long-term displacements, they can be decomposed into a creep model (controlled by geological conditions) and a superimposed recoverable term (dependent on external factors), which appears closely correlated with reservoir water level changes close to the river's edge. These results, combined with in situ data, provide a comprehensive analysis of the Huangtupo landslide, which is essential for its management.

[ Deed of sale] 1705

Deed of sale in fee simple absolute of land in Boston to Abigail Brightman.

Battlefield of Spotsylvania Court House, Virginia and vicinity, 1864 (Raster Image)

This layer is a georeferenced raster image of the historic paper map: Map of the battle field of Spottsylvania C.H. : showing the field of operations of the Army of the Potomac commanded by Maj. Gen. George G. Meade U.S.A., from May 8th to 21st, 1865 [i.e. 1864], surveyed under the orders of Bvt. Col. J.C. Duane, Major of Engineers, Chief Engineer, Army of the Potomac, by Bvt. Maj. C.W. Howell, 1st Lieut. of Engineers ; assisted by Messrs. L.C. Oswell, L. Bell, and R.B. Talfor ; J. Bien, lithographer, New York. It was published ca. 1865. Scale [1:15,840]. Covers area surrounding Spotsylvania and Spotsylvania Battlefield, Virginia. The image inside the map neatline is georeferenced to the surface of the earth and fit to the Virginia State Plane North Coordinate System (in Meters) (Fipszone 4501). All map collar and inset information is also available as part of the raster image, including any inset maps, profiles, statistical tables, directories, text, illustrations, or other information associated with the principal map. This map shows features such as roads, drainage, dwellings with names of inhabitants, vegetation, Union and Confederate troop lines and defenses, and more. Relief shown by hachures. Includes note. This layer is part of a selection of digitally scanned and georeferenced historic maps of the Civil War from the Harvard Map Collection. Many items from this selection are from a collection of maps deposited by the Military Order of the Loyal Legion of the United States Commandery of the State of Massachusetts (MOLLUS) in the Harvard Map Collection in 1938. These maps typically portray both natural and manmade features, in particular showing places of military importance. The selection represents a range of regions, originators, ground condition dates, scales, and purposes.

Petroleum laws of all America /

"Publications relating to mining laws": p. 644-645.

Four hundred years of mining history in Mexico, 1521 to 1937.

"April 21, 1947."

Mineral industries of Latin America /

"December 1981."

University Boat. Scene on the Huron River

On verso: Ladies's Crew: Miss Banker, '78 - Carrie Julia '82?; Miss Bennison, '78, stroke - Cora Agnes; Miss Chandler, '78 - Eva; Miss Blood, '79 - Maria Lavina; Miss Colby, '79 - June Rose, '78; Miss Barry, '79 - Nunnie '78; On mat: Photographed by J.A. Jenney.

Main Street North from Liberty Street - Ann Arbor

Plates. 12 pts. in 1 v. Publication information: Chicago : The W. H. Parish publishing co., 1893. Digital image from copy neg in Stugis collection.

Two students on Huron River bridge

On verso of similar print: Near Golf Course (Daybook, image #24)