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Scientists map underwater topography of more than 1.4 million lakes and reservoirs worldwide 新闻
来源平台:National Center of Atmospheric Research. 发布日期:2022
作者:  admin
收藏  |  浏览/下载:8/0  |  提交时间:2022/03/01
Assimilation of DAWN Doppler wind lidar data during the 2017 Convective Processes Experiment (CPEX): impact on precipitation and flow structure 科技报告
来源:European Geosciences Union. 出版年: 2021
作者:  admin
收藏  |  浏览/下载:10/0  |  提交时间:2021/07/27
Intercomparison of wind observations from the European Space Agency’s Aeolus satellite mission and the ALADIN Airborne Demonstrator 科技报告
来源:European Geosciences Union. 出版年: 2020
作者:  admin
收藏  |  浏览/下载:5/0  |  提交时间:2020/06/16
Monumental architecture at Aguada Fenix and the rise of Maya civilization 期刊论文
NATURE, 2020
作者:  Bedding, Timothy R.;  Murphy, Simon J.;  Hey, Daniel R.;  Huber, Daniel;  Li, Tanda;  Smalley, Barry;  Stello, Dennis;  White, Timothy R.;  Ball, Warrick H.;  Chaplin, William J.;  Colman, Isabel L.;  Fuller, Jim;  Gaidos, Eric;  Harbeck, Daniel R.;  Hermes, J. J.;  Holdsworth, Daniel L.;  Li, Gang;  Li, Yaguang;  Mann, Andrew W.;  Reese, Daniel R.;  Sekaran, Sanjay;  Yu, Jie;  Antoci, Victoria;  Bergmann, Christoph;  Brown, Timothy M.;  Howard, Andrew W.;  Ireland, Michael J.;  Isaacson, Howard;  Jenkins, Jon M.;  Kjeldsen, Hans;  McCully, Curtis;  Rabus, Markus;  Rains, Adam D.;  Ricker, George R.;  Tinney, Christopher G.;  Vanderspek, Roland K.
收藏  |  浏览/下载:30/0  |  提交时间:2020/07/03

Archaeologists have traditionally thought that the development of Maya civilization was gradual, assuming that small villages began to emerge during the Middle Preclassic period (1000-350 bc  dates are calibrated throughout) along with the use of ceramics and the adoption of sedentism(1). Recent finds of early ceremonial complexes are beginning to challenge this model. Here we describe an airborne lidar survey and excavations of the previously unknown site of Aguada Fenix (Tabasco, Mexico) with an artificial plateau, which measures 1,400 m in length and 10 to 15 m in height and has 9 causeways radiating out from it. We dated this construction to between 1000 and 800 bc using a Bayesian analysis of radiocarbon dates. To our knowledge, this is the oldest monumental construction ever found in the Maya area and the largest in the entire pre-Hispanic history of the region. Although the site exhibits some similarities to the earlier Olmec centre of San Lorenzo, the community of Aguada Fenix probably did not have marked social inequality comparable to that of San Lorenzo. Aguada Fenix and other ceremonial complexes of the same period suggest the importance of communal work in the initial development of Maya civilization.


Lidar survey of the Maya lowlands uncovers the monumental site of Aguada Fenix, which dates to around 1000-800 bc and points to the role of communal construction in the development of Maya civilization.


  
Elephants limit aboveground carbon gains in African savannas 期刊论文
GLOBAL CHANGE BIOLOGY, 2019, 25 (4) : 1368-1382
作者:  Davies, Andrew B.;  Asner, Gregory P.
收藏  |  浏览/下载:11/0  |  提交时间:2019/04/09
aboveground carbon density  carbon cycling  Carnegie Airborne Observatory  herbivory  Kruger National Park  LiDAR  megaherbivore  South Africa  woody encroachment  
Spatial patterning among savanna trees in high-resolution, spatially extensive data 期刊论文
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2019, 116 (22) : 10681-10685
作者:  Staver, A. Carla;  Asner, Gregory P.;  Rodriguez-Iturbe, Ignacio;  Levin, Simon A.;  Smit, Izak P. J.
收藏  |  浏览/下载:8/0  |  提交时间:2019/11/27
savanna  spatial pattern  LiDAR  heterogeneity  
Canopy structure and topography jointly constrain the microclimate of human-modified tropical landscapes 期刊论文
GLOBAL CHANGE BIOLOGY, 2018, 24 (11) : 5243-5258
作者:  Jucker, Tommaso;  Hardwick, Stephen R.;  Both, Sabine;  Elias, Dafydd M. O.;  Ewers, Robert M.;  Milodowski, David T.;  Swinfield, Tom;  Coomes, David A.
收藏  |  浏览/下载:13/0  |  提交时间:2019/04/09
canopy height  digital elevation model  forest degradation and fragmentation  LiDAR  near-surface air temperature  remote sensing  selective logging  vapour pressure deficit  
Ancient lowland Maya complexity as revealed by airborne laser scanning of northern Guatemala 期刊论文
SCIENCE, 2018, 361 (6409) : 1355-+
作者:  Canuto, Marcello A.;  Estrada-Belli, Francisco;  Garrison, Thomas G.;  Houston, Stephen D.;  Acuna, Mary Jane;  Kovac, Milan;  Marken, Damien;  Nondedeo, Philippe;  Auld-Thomas, Luke;  Castanet, Cyril;  Chatelain, David;  Chiriboga, Carlos R.;  Drapela, Tomas;  Lieskovsky, Tibor;  Tokovinine, Alexandre;  Velasquez, Antolin;  Fernandez-Diaz, Juan C.;  Shrestha, Ramesh
收藏  |  浏览/下载:6/0  |  提交时间:2019/11/27
Chronosequence predictions are robust in a Neotropical secondary forest, but plots miss the mark 期刊论文
GLOBAL CHANGE BIOLOGY, 2018, 24 (3) : 933-943
作者:  Becknell, Justin M.;  Porder, Stephen;  Hancock, Steven;  Chazdon, Robin L.;  Hofton, Michelle A.;  Blair, James B.;  Kellner, James R.
收藏  |  浏览/下载:16/0  |  提交时间:2019/04/09
biomass  La Selva  Land Vegetation and Ice Sensor  secondary succession  tropical forest  waveform lidar  
RELEASE: Indonesian Peat Prize Announces Winner of $1 million: International Peat Mapping Team (IPMT): Remote Sensing Solutions GmbH (RSS), the Agency for the Assessment and Application of Technology (BPPT) and Sriwijaya University 新闻
来源平台:World Resources Institute. 发布日期:2018
作者:  admin
收藏  |  浏览/下载:4/0  |  提交时间:2020/01/19