Vietnam Journal of Earth Sciences

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CÁC KIỂU TRƯỢT LỞ KHU VỰC CỐC PÀI HUYỆN XÍN MẦN TỈNH HÀ GIANG
Vietnam Journal of Earth Sciences - Tập 33 Số 3 - 2011
Bùi Văn Thơm
Types of landslides in the Coc Pai area, Xin Man District, Ha Giang provincesThe survey and research results in the Coc Pai area, Xin Man district, Ha Giang province, has identified four types of landslide with different characteristics as followed:1. Mixture slide occured in all soil types (rock, weathered crust), slope steepness of 25-70° and the transition between two places where the terrain i...... hiện toàn bộ
Preliminary results on microplastics in surface water from the downstream of the Day River
Vietnam Journal of Earth Sciences - Tập 43 Số 4 - 2021
Quynh Le Thi Phuong, Oanh Doan Thi, Thuong Bui Huyen, Thuy Duong Thi, Huong Nguyen Thi Nhu, Thu Le Phuong, Phu Duong Hong, Quynh Hoang Thi
Microplastics (MPs), referring to plastic items ranging from 1 to 5000 µm long, are polluting the terrestrial and aquatic environments and are becoming a threat to the health of ecosystems, biota, and humans. Rivers are major carriers of these materials from the terrestrial environment to the oceans. In the present study, the occurrence of MPs in a peri-urban river was investigated. The Day river ...... hiện toàn bộ
#microplastic #fiber #Day River #surface water #Vietnam
Phát hiện hóa thạch Conodonta trong đá vôi Cầu Hàm Rồng (Thanh Hóa)
Vietnam Journal of Earth Sciences - Tập 25 Số 3 - 2003
Discovery of Conodonts in limestones from Ham Rong bridge (Thanh Hoa)
The terrain effect in vertical deflection in the northwest and highlands mountainous areas
Vietnam Journal of Earth Sciences - Tập 34 Số 1 - 2012
Pham Thi Hoa
This article presents the methods determining terrain effect in vertical deflection and the surveying result in the mountainous areas of the Northwest and Gia Lai-Kon Tum highlands. Based on the analysis and assessment of the calculations, the terrain effects invertical deflection, in the surveyed areas, occur with positive and negative value, complex variable. The terrain effect in vertical defle...... hiện toàn bộ
Kết quả nghiên cứu bổ sung về hệ tầng Đa Niêng (Carbon hạ) ở Tây Bắc Bộ
Vietnam Journal of Earth Sciences - Tập 29 Số 4 - 2014
Additional results of studying the Lower Carboniferous Da Nieng formation in West Bac Bo
HIGH ARSENIC CONCENTRATION IN GROUNDWATER RELATED TO SEDIMENTARY FACIES IN THE MEKONG RIVER DELTA, VIETNAM
Vietnam Journal of Earth Sciences - Tập 38 Số 2 - 2016
Nguyen Van Lap, Ta Thi Kim Oanh*
Arsenic (As) contamination in groundwater has been recognized in the Mekong River Delta (MRD) since 2001, especially in Dong Thap and An Giang provinces. The investigations were carried out during 2008-2009 and from 2012 to present. The investigations of As distribution in groundwater and sediments were based upon the field, and laboratory analyses using field kit (Hironaka, 1998) and AOAC laborat...... hiện toàn bộ
Nghiên cứu nguyên nhân tạo màu của nhóm khoáng vật Felsdpar trong đá Granit phức hệ Vân Canh
Vietnam Journal of Earth Sciences - Tập 25 Số 1 - 2003
Research on the causes of colors of feldspars of granite in Van Canh comPlex
Xác định tiềm năng sử dụng đất bằng phân tích không gian và đánh giá đa tiêu chuẩn
Vietnam Journal of Earth Sciences - Tập 23 Số 4 - 2001
Land suitability analysis by spatial analysis and multicriterie evaluation
Monitoring spatial-temporal dynamics of small lakes based on SAR Sentinel-1 observations: a case study over Nui Coc Lake (Vietnam)
Vietnam Journal of Earth Sciences - Tập 24 Số 3 - 2022
Son Tong Si, Binh Pham Duc
For the first time, this study estimates the variation of surface water extent of Nui Coc Lake located in Thai Nguyen province in North Vietnam at high spatial (20 m) and temporal resolution (bi-weekly). The classification methodology was developed based on the use of the Otsu threshold algorithm on the histogram of the backscatter coefficient of the SAR Sentinel-1 signal. Totally, more than 150 S...... hiện toàn bộ
#Lake surface water monitoring #Nui Coc Lake (Vietnam) #SAR #Sentinel-1
Nghiên cứu khả năng sóng thần ven biển và hải đảo Việt Nam
Vietnam Journal of Earth Sciences - Tập 26 Số 4 - 2004
The possibility of Tsunami's appearance along the coastal zone and islands of Vietnam
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