Acoustical facies analysis at the Ba Lat delta front (Red River Delta, North Vietnam)

2007 ◽  
Vol 29 (4) ◽  
pp. 532-544 ◽  
Author(s):  
G.D. van den Bergh ◽  
Tj.C.E. van Weering ◽  
J.F. Boels ◽  
D.M. Duc ◽  
M.T. Nhuan
2020 ◽  
Author(s):  
Peter Edwards

Abstract The Red River Delta (RRD) in north Vietnam, one of the most densely populated areas in the world with over 1000 people per km2, has a traditional small-scale integrated farming system known locally as VAC in which a polyculture of carps is raised in household-level ponds in association with livestock and crops. VAC is an acronym for the Vietnamese words for garden (vuon), pond (ao) and livestock quarters (chuong). There are diverse linkages between VAC subsystems which vary with agroecological zone. The importance of VAC has long been recognized for household food security and increasingly as a source of income as the rice-based economy is diversified. Research with farmers has improved the efficiency of use of on-farm and locally available resources in VAC with extrapolated fish yields of 3-4 t ha-1 in the 700-1000 m2 ponds, giving cost:benefit ratios of 1:2.7-2.8.


1998 ◽  
Vol 36 (9) ◽  
pp. 742-749 ◽  
Author(s):  
Dang Duch Nhan ◽  
Nguyen Manh Am ◽  
Nguyen Chu Hoi ◽  
Luu Van Dieu ◽  
F.P Carvalho ◽  
...  

2019 ◽  
pp. 87-107
Author(s):  
Xiaobing Li

Between December 1950 and July 1951, the PLA helped the PAVN establish four more divisions by rearming and training them in China, including the 316th, 320th, and 325th Infantry Divisions and 351st Heavy (Artillery/Engineering) Division. By the summer of 1951, the PAVN had 200,000 regular troops. Chapter 4 reveals that the Viet Minh high command did not intend to remain in the remote, less-populated mountainous region with a backward economy after their victory in the Border Campaign. Instead, they were ready to move south from the border region into the Red River Delta, the rice bowl of North Vietnam. Ignoring Chinese warnings, Giap planned a “general counteroffensive” for the final victory in 1950–1951. This chapter examines his three offensive campaigns at Vinh Yen, Mao Khe, and the Day River, from December 1950 through June 1951, and explores the disagreements and miscalculations made by the Chinese advisors.


2015 ◽  
Vol 46 (2) ◽  
pp. 246-273 ◽  
Author(s):  
Shin’ya Ueda

After the restoration of the Lê dynasty, the Red River delta region was flooded with military men who set up and controlled irregular departments from the end of the sixteenth to the first half of the seventeenth century. The imperial administration became a shell during the Lê-Trịnh period, with the Trịnh Lords as de facto rulers who constructed their own parallel government on the basis of these local departments. This analysis of contemporary inscriptions indicates that the Trịnh Lords subsequently expanded their administration and secured their rule by absorbing large numbers of Red River delta literati, while retaining many eunuchs in influential financial and military roles. Overall, the Trịnh bureaucracy, comprising of the Lục Phiên andLục Cung,was a kind of financial organisation combined with a military district system because it harnessed the existing military organisation.


2021 ◽  
Vol 21 (1) ◽  
pp. 1-11
Author(s):  
Vu Van Ha ◽  
Nguyen Minh Quang ◽  
Pham Quang Son ◽  
To Xuan Ban ◽  
Tran Ngoc Dien ◽  
...  

Kim Son coastal plain is a part of the Red River Delta located between Day and Can rivers. Over the past 55 years, Kim Son coastal plain has been the region with the highest accretion rate in the Red River Delta. This study aims to clarify the sediment characteristics of Kim Son coastal plain. It has the structure of a typical tidal flat and a relatively straightforward tide-influenced sedimentary structure evidenced by the field observation, sampling 70 hand-drilled boreholes, borehole logging and analyzing 177 samples of grain size. There are three tidal sedimentary zones to be identified, including sand flat, mixed flat, and mudflat. The history of topographic changes is also presented over six periods from 1965 to 2020 based on analyzing and interpreting multi-time satellite images. The total accretion area of Kim Son coastal plain over 55 years was 4,081.2 ha.


2013 ◽  
pp. 79-94
Author(s):  
Ngoc Luu Bich

Climate change (CC) and its impacts on the socio-economy and the development of communities has become an issue causing very special concern. The rise in global temperatures, in sea levels, extreme weather phenomena, and salinization have occurred more and more and have directly influenced the livelihoods of rural households in the Red River Delta – one of the two regions projected to suffer strongly from climate change in Vietnam. For farming households in this region, the major and traditional livelihoods are based on main production materials as agricultural land, or aquacultural water surface Changes in the land use of rural households in the Red River Delta during recent times was influenced strongly by the Renovation policy in agriculture as well as the process of industrialization and modernization in the country. Climate change over the past 5 years (2005-2011) has started influencing household land use with the concrete manifestations being the reduction of the area cultivated and the changing of the purpose of land use.


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