Enter records

ID: 50587
Title: Near Infrared Spectrometer SIR - 2 on Chandrayaan - 1.
Author: Urs Mall, marek Banaszkiewicz, Kjell Bronstad, Susan McKenna-Lawlor, Andreas Nathues, Finn Soraas, Esa Vilenius and Kjetil Ullalland.
Editor: P. Balaram
Year: 2009
Publisher: CURRENT SCIENCE, Volume 96, Number 4, 25 February 2009, Indian Academy of Science
Source: Centre for Ecological Science,Indian Institute of Science, Bangalore-12
Reference: None
Subject: Science
Keywords: Chandrayaan, chemical composition, Mineralogy, Moon, near-infrared, spectroscopy.
Abstract: Chandrayaan - 1, the first Indian mission to the Moon, will provide an oppertunity for in situ lunar observations over a two-year period from a 100km polar orbit. A comprehensive suite of onboard instrument will include the SIR-2 near-infrared grating spectrometer. SIR-2, a pointing spectrometer, will observe the Moon in the spectral range 900-2400 nm, with a unique spectral resolution of 6 nm over a wide range of phase angles. The high resolution SIR-2 observations, particularly of the lunar far side and polar region, are expected to have a large impact on our understanding of the mineralogy and composition of the Moon.
Location: 241
Literature cited 1: None
Literature cited 2: None

ID: 50586
Title: The Moon Mineralogy Mapper (M3) on Chandrayaan - 1.
Author: Carle M. Pieters, Joseph Boardman, Boardman, Bonnie Buratti, Alok Chatterjee, Roger Clark, Tom Glavich, Robert Green, James Head III, Peter Isaacson, Erick Malaret, Thomas Mc Cord, John Mustard, Noah Petro, Cassandra Runyon, Matthew staid, Jessica Su
Editor: P. Balaram
Year: 2009
Publisher: CURRENT SCIENCE, Volume 96, Number 4, 25 February 2009, Indian Academy of Science
Source: Centre for Ecological Science,Indian Institute of Science, Bangalore-12
Reference: None
Subject: Science
Keywords: Imaging spectrometer, lunar composition, mineralogy.
Abstract: The Moon Mineralogy Mapper (M3) is a NASA supported guest instrument on ISRO ' s remote sensing mission to Moon, Chandrayaan - 1. The M3 is an imaging spectrometer that operates from the visible into the near-infrared (0.42-3.0mm) where highly diagnostic mineral absorption bands occur. Over the course of the mission M3 will provide low resolution spectroscopic data for the entire lunar at 140 m/pixel (86 spectral channels) to be used as a base-map and high spectral resolution science data (80 m/pixel;260 spectral channels) for 25-50% of the surface. The detailed mineral assessment of different lunar terrains provided by M3 is principal information needed for understanding the geologic evolution of the lunar crust and lays the formation for focussed future in-depth exploration of the Moon.
Location: 241
Literature cited 1: None
Literature cited 2: None

ID: 50585
Title: Hyper Spectral Imager for lunar mineral mapping in visible and near infrared band.
Author: A. S. Kiran Kumar, A. Roy Chowdhury, A. Banerjee, A. B. Dave, B. N. Sharma, K. J. Shah, K. R. Murali, S. Mehta, S. R. Joshi and S. S. Sarkar
Editor: P. Balaram
Year: 2009
Publisher: CURRENT SCIENCE, Volume 96, Number 4, 25 February 2009, Indian Academy of Science
Source: Centre for Ecological Science,Indian Institute of Science, Bangalore-12
Reference: None
Subject: Science
Keywords: Hyper Spectral Imager, mineral composition, Moon, wedge filter.
Abstract: The Hyper Spectral Imager (HySI), operating in the visible and near infrared spectral region, is one of the three imaging instruments on board Chandrayaan - 1 spacecraft for mineralogical study of the Moon. HySI will map the entire lunar surface in 64 contiguous bands in the visible and near infrared (VNIR : 421 - 964 nm) with a spatial sampling of 80 m. A wedge filter is employed for the spectral separation and the image is mapping on an area detector. The detector output is processed in the front-end electronics to generate the 64-bands with 12-bit quantization. HySI is a highly compact instrument weighing 2.5 kg with a power requirement of 2.6 W.
Location: 241
Literature cited 1: None
Literature cited 2: None

ID: 50584
Title: Terrain Mapping Camera : A stereoscopic high-resolution instrument on Chandrayaan - 1
Author: A. S. Kiran Kumar, A. Roy Chowdhury, A. Banerjee, A. B. Dave, B. N. Sharma, K. J. Shah, K. R. Murali, S. R. Joshi, S. S. Sarkar and V. D. Patel
Editor: P. Balaram
Year: 2009
Publisher: CURRENT SCIENCE, Volume 96, Number 4, 25 February 2009, Indian Academy of Science
Source: Centre for Ecological Science,Indian Institute of Science, Bangalore-12
Reference: None
Subject: Science
Keywords: Active pixel sensor, digital elevation map, Moon, Stereoscopic view.
Abstract: Chandrayaan - 1, India ' s first lunar mission has the prime objective of simultaneous chemical, mineralogical and objective of simultaneous chemical, mineralogical and photo-selenological mapping of the lunar surface. In keeping with the mission objectives, Chadrayaan - 1 carries the Terrain Mapping Camera (TMC) designed to map the entire lunar surface during the planned two-year mission. TMC data will enables preparation of a three dimensional lunar atlas with 5 m sampled spatial and altitude data of 12 bit digitization. The TMC will image in the panchromatic spectral band of 0.5-0.75 mm with a stereo view in the fore, nadir and aft directions of the spacecraft movement and have a base to height ratio of one.
Location: 241
Literature cited 1: None
Literature cited 2: None

ID: 50583
Title: Chandrayaan - 1 India ' s first planetary science mission to the moon.
Author: J. N. Goswami and M. Annadurai
Editor: P. Balaram
Year: 2009
Publisher: CURRENT SCIENCE, Volume 96, Number 4, 25 February 2009, Indian Academy of Science
Source: Centre for Ecological Science,Indian Institute of Science, Bangalore-12
Reference: None
Subject: Science
Keywords: Chandrayaan - 1, evolution, ISRO, moon, original, planetary exploration.
Abstract: Chandrayaan - 1, the first Indian planetary exploration mission, will carry out high resolution remote sensing studies of the moon further our understanding about its original and evolution. Hyper-spectral imaging in the UV-VIS-NIR region using three imaging spectrometers, along with a low energy x-ray spectrometer will provide minerological and chemical composition of the lunar surface at high spatial resolution. A terrain mapping camera will provide high resolution three dimensional images of the lunar surface and will be complemented by a laser ranging instrument that will provide lunar altimetry. Three payload - a high energy x-y ray spectrometer, a sub-keV atom reflecting analyser, and miniature imaging radar - will be used for the first time for remote sensing exploration of a planetary body. They will investigate transport of volatiles on the surface, presence of localized lunar mini-magnetospher and possible presence of water ice in the permanently shadowed lunar polar region respectively. A radiation dose monitor will provide information on energetic particle flux route to the moon and in lunar orbit. An impact probe carrying an imaging system, a radar altimeter and a mass spectrometer will be released from the spacecraft to land at a predestinated lunar site. The design of design of the one tonne-class spacecraft is primarily adapted from flight proven Indian Remote Sensing bus with several modifications that are specific to the lunar mission. The spacecraft was launched by using a variant of the indigenous Polar Setellite Launch Vehicle(PSLV - XL) and placed in a 100 km circular polar orbit around the moon with a planned mission life of two years. An Indian Deep Space Network and an Indian space Science Data Center have been established as a part of Chandrayaan -1 mission and will cater to the future Indian space science and planetary missions.
Location: 241
Literature cited 1: None
Literature cited 2: None

ID: 50582
Title: Reclaimed islands and new offshore townships in the Arabian Gulf : potential natural hazards.
Author: Arun Kumar.
Editor: P. Balaram
Year: 2009
Publisher: CURRENT SCIENCE, Volume 96, Number 4, 25 February 2009, Indian Academy of Science
Source: Centre for Ecological Science,Indian Institute of Science, Bangalore-12
Reference: None
Subject: Science
Keywords: Natural hazards, offshore townships, reclaimed islands.
Abstract: Some of the Arabian Gulf states are busy developing several large, reclaimed islands and offshore townships. These structures are undoubtedly fururistic and the ideas are quite novel. However, there are serious issues of long-term sustainability of these townships. This article reviews and discusses natural hazards that have struck this region in this past and have the potential to strike against any time in the future. Potential dangers and consequences are identified.
Location: 241
Literature cited 1: None
Literature cited 2: None

ID: 50581
Title: Environmental flows in river basins : a case study of River Bhadra
Author: K. Nenin Babu and B. K. Harish Kumara
Editor: P. Balaram
Year: 2009
Publisher: CURRENT SCIENCE, Volume 96, Number 4, 25 February 2009, Indian Academy of Science
Source: Centre for Ecological Science,Indian Institute of Science, Bangalore-12
Reference: None
Subject: Science
Keywords: Dams, environmental flow, riverine ecosystem, river basin.
Abstract: Environmental water requirement, also reffered to as ' environmental flow ' , is a compromise between water resources development and maintenance of a river in ecologically acceptable or agreed conditions. For instance, between a major storage and downstream, the quantity and also seasonality of water flow in a river may be greatly changed from the natural condition, thus paving the way for drastic chances in the riverine ecosystem ecosystem. This article presents the gist of the present scenario in Bhadra river, which has one big dam that is altering the natural flow. This study is based on both the field investigations and desk study.
Location: 241
Literature cited 1: None
Literature cited 2: None

ID: 50580
Title: Performance evaluation of filtration unit of groundwater recharge shaft : laboratory study.
Author: J. B. Kambale, A. Sarangi, D. K. Sing and A. K. Singh
Editor: P. Balaram
Year: 2009
Publisher: CURRENT SCIENCE, Volume 96, Number 4, 25 February 2009, Indian Academy of Science
Source: Centre for Ecological Science,Indian Institute of Science, Bangalore-12
Reference: None
Subject: Science
Keywords: None
Abstract: The groundwater resource of our country is now under serious threat due to over-exploitation, pollution, industrialization and improper management. The recharge shaft is an efficient and economic method for recharging groundwater. In this study, the effect of variable thickness of coarse sand (CS), gravel (G) and pebble (P) layers of the filtration unit of the recharge shaft on the recharge rate and the sediment concentration of effluent water was evaluated. An experiment was carried out with laboratory-scale models having varying depths of CS, G and P layers in five different thickness combinations, viz, 1 : 1.5 : 3, 1.5 : 1 : 3, 3 : 1 : 1.5, 3 :1.5 :1, 1 :1 : 1 ( CS : G : P). These models were operated with six different treatments having varying concentrations of turbid water, similar to the sedimentation level of the surface run-off ranging from 6 to 16 g/l.. It was observed that higher thickness of CS resulted in reduction of the recharge rate, but improved the filtration of the effluent. Overall, considering both the recharge rate and sediment concentration of the effluents, the filtration layer thickness ratio of 1 : 5 : 1 : 3 (CS : G : P) would be the optimal design of the filtration unit to facilitate higher recharge and perform better filtration of the turbid water.
Location: 241
Literature cited 1: None
Literature cited 2: None

ID: 50579
Title: Dictyopteris serrata (Arschoug) Hyot: first record of male gametophytic plants.
Author: None
Editor: P. Balaram
Year: 2009
Publisher: CURRENT SCIENCE, Volume 96, Number 4, 25 February 2009, Indian Academy of Science
Source: Centre for Ecological Science,Indian Institute of Science, Bangalore-12
Reference: None
Subject: Science
Keywords: None
Abstract: None
Location: 241
Literature cited 1: None
Literature cited 2: None

ID: 50578
Title: ' Tank ' :local land race of wheat for protection of wheat field against monkey raids - an indigenous technical knowledge.
Author: None
Editor: P. Balaram
Year: 2009
Publisher: CURRENT SCIENCE, Volume 96, Number 4, 25 February 2009, Indian Academy of Science
Source: Centre for Ecological Science,Indian Institute of Science, Bangalore-12
Reference: None
Subject: Science
Keywords: None
Abstract: None
Location: 241
Literature cited 1: None
Literature cited 2: None

ID: 50577
Title: Breccia filled inflation clefts on the banks of the Kukadi River near Hanewadi, Ahmednagar District, Maharastra
Author: None
Editor: P. Balaram
Year: 2009
Publisher: CURRENT SCIENCE, Volume 96, Number 4, 25 February 2009, Indian Academy of Science
Source: Centre for Ecological Science,Indian Institute of Science, Bangalore-12
Reference: None
Subject: Science
Keywords: None
Abstract: None
Location: 241
Literature cited 1: None
Literature cited 2: None

ID: 50576
Title: Stenochironomus nelumbus infesting leaves of Nelumbo nucifera and use of the term ' gall '
Author: Anantanarayanan Raman
Editor: P. Balaram
Year: 2009
Publisher: CURRENT SCIENCE, Volume 96, Number 4, 25 February 2009, Indian Academy of Science
Source: Centre for Ecological Science,Indian Institute of Science, Bangalore-12
Reference: None
Subject: Science
Keywords: None
Abstract: None
Location: 241
Literature cited 1: None
Literature cited 2: None

ID: 50575
Title: DEM Generation Using a Digital Large Format Frame Camera
Author: Joachim Hohle
Editor: Russell G. Congaition
Year: 2009
Publisher: PE & RS PHOTOGRAMMETRIC ENGINEERING & REMOTE SENSING, January 2009, Volume 75, Number 1, James R. Plasker
Source: Centre for Ecological Science,Indian Institute of Science, Bangalore-12
Reference: None
Subject: PHOTOGRAMMETRIC ENGINEERING & REMOTE SENSING
Keywords: None
Abstract: Progress in automated photogrammetric DEM generation is presented. Starting from the produres and the performance parameters of automated photogrammetric DEM generation, the results of some practical tests with large scale images are presented. The DEMs are derived from images taken by a digital large-frame aerial camera and checked by reference data of superior data of superior accuracy. In average, a vertical accuracy of ah = 13 cm or 0.20 per thousand of the mean flyng height above mean terrain has been achieved. Some recent innovations in digital large-frame cameras and in the processing software give hope for even better results. In comparison with results from film-based cameras, it can be stated that both tecvhnologies are able to produce very dense and accurate DEMs.
Location: 231
Literature cited 1: None
Literature cited 2: None

ID: 50574
Title: Accuracy Assessment of Canadian Digital Elevation Data using ICESat
Author: Alexandre Beaulieu and Daniel Clavet.
Editor: Russell G. Congaition
Year: 2009
Publisher: PE & RS PHOTOGRAMMETRIC ENGINEERING & REMOTE SENSING, January 2009, Volume 75, Number 1, James R. Plasker
Source: Centre for Ecological Science,Indian Institute of Science, Bangalore-12
Reference: None
Subject: PHOTOGRAMMETRIC ENGINEERING & REMOTE SENSING
Keywords: None
Abstract: The accuracy of the Canadian Digital Elevation Data(CDED) produced over the past was based on the accuracy of the sources used for their creation (elevation extracted form contour lines or provincial data exchange). No means to characterize the absolute vertical precision was available, particularly in remote areas. A new production of CDED in the North is currently carried out by the Centre for Topographic Informmation, Natural Resources Canada with the support of the Canadian Space Agency. Approximately 1,500 new data sets are being produced. Altimetric data is partly acquired with the European Remote Sensing satellite (ERS) by interferometry (70 percent) and partly by stereo-compilation with aerial photography (30 percent). The assessment of the absolute altimetric accuracy of the CDEDs themselves as opposed from the sources is required. ICESAT lidar data gives us such an opportunity. The results obtained on the first CDED data sets produced with ERS interferometry are very promising. Accuracy for a group of 21 CDED is in order of 0.34 m + or - 6.22 m, i.e., 10 m at 90 percent confidence level. Accuracy is recorded in the metadata of each data set and is freely available on the GEOBASE portal (http:/www.geobase.ca/).
Location: 231
Literature cited 1: None
Literature cited 2: None

ID: 50573
Title: Estimation of Blufflines Using Topographic Lidar Data and Orthoimages.
Author: Jung-Kung Liu, Rongxing Li, Sagar Despande, Xutong Niu, and Tian-Yuan Shih
Editor: Russell G. Congaition
Year: 2009
Publisher: PE & RS PHOTOGRAMMETRIC ENGINEERING & REMOTE SENSING, January 2009, Volume 75, Number 1, James R. Plasker
Source: Centre for Ecological Science,Indian Institute of Science, Bangalore-12
Reference: None
Subject: PHOTOGRAMMETRIC ENGINEERING & REMOTE SENSING
Keywords: None
Abstract: Coastal zone mapping, particularly of shorelines, is critical for safe navigation, resource management, environmental protection, and sustainable coastal development. This paper explains a method for extracting coastal blufflines where airborne lidar (Light Detection and Ranging) data is integrated with orthoimages. A historical Lake Eric Bluff top lines was used as a reference line and a series of transects created perpendicular to it. After three-dimensional clevation profiles of these transects were obtained from a lidar DSM(digital surface model), a new algorithm was used to extract from these transects initial points identifying bluff top and toe. These points were connected to form an initial bluffline. The horizontal position of this initial bluffline was refined with edges obtained from the orthoimages using techniques including mean-shift segmentation, surface reconstruction, and edge detection. Results show this method is capable of deriving blufflines having a similar quality to that from manual digitization.
Location: 231
Literature cited 1: None
Literature cited 2: None